Ridge Three | RTX 5070 Ti 16GB + Ryzen 7 7800X3D | Ready-to-Go Gaming PC | PC36

⛰️ Ridge Three

As much machine as twelve and a half litres will sensibly hold

Ridge Three is the top of the range, and it is the point at which a case this size stops being a compromise at all. An RTX 5070 Ti with 16GB of GDDR7 and a Ryzen 7 7800X3D will play anything at 1440p with everything turned up, and will hold its own at 4K with DLSS doing the work it was designed for.

It is also the build where the constraints bite hardest, and we would rather be the ones to tell you. The processor runs to a 90W package ceiling because 70mm of cooler height is what this case allows. The graphics card has to be a model that fits properly alongside the side fans, so we choose it rather than taking whatever is cheapest that week. Neither of those is a problem, but both are decisions, and you should be able to see them.

This is the machine for someone who has decided that where the computer sits matters as much as what it does. It goes under a television, it stands beside a monitor, and it looks like a piece of furniture rather than a tower with a window in it.

🧬 Built to last, designed to evolve

Built on AMD's AM5 platform, which AMD have committed to supporting into 2027 and beyond. The processor, memory and storage can all be upgraded without replacing the motherboard, and the board's second M.2 slot is free for a later drive. This is the top of what we would sensibly fit in this chassis, so the honest upgrade path from here is a larger case rather than a larger card, and we will say so on live chat rather than sell you something that will not breathe.

📃 Specifications

• 🧠 CPU: AMD Ryzen 7 7800X3D (package power capped at approximately 90W)
  Click or tap for deeper spec info

  • 8 cores, 16 threads of Zen 4, boosting to 5.0GHz, with 96MB of L3 cache thanks to AMD's 3D V-Cache
  • The cache is the whole point. Stacking 64MB of extra L3 on top of the die means far more of a game's working data sits next to the cores instead of out in system memory. In the games that care - large open worlds, simulation titles, heavily modded games, competitive shooters at very high refresh - that is worth more than raw clock speed
  • Why we cap it at around 90W, stated plainly. This case allows 70mm of cooler and no more. Rather than let the chip chase a power limit it cannot cool, we set a sensible ceiling. In games the 7800X3D typically draws well under 90W anyway, so the cap costs essentially nothing where it matters. In long all-core work such as video exports or rendering, this machine will finish behind the same processor in a full tower
  • Being straight about pairing: at 1440p with settings up, and at 4K in everything, the graphics card is what sets your frame rate here. The X3D cache earns its keep in the competitive and simulation titles where the processor leads
  • The 7800X3D is not multiplier-overclockable. The stacked cache sits above the cores on this generation, so AMD lock the multiplier to protect it. Tuning here means undervolting via Curve Optimiser, which in a case this size is the more useful direction anyway
  • Socket AM5, so a faster processor can go in later without replacing anything else
• ❄️ CPU cooler: Thermalright AXP120-X67
  Click or tap for deeper spec info

  • A low-profile top-down cooler, 67mm tall, with six heatpipes and a full-size 120mm fan
  • The case allows 70mm and no more. That rules out every tower cooler ever made, so the only question is which low-profile cooler, and this is the best one available. Most coolers at this height use a 92mm fan and have to spin it hard; the 120mm fan here moves the same air far more slowly, and fan speed is what you actually hear
  • Top-down design, so it also pushes air across the motherboard's power stages and memory. In a chassis this size that is worth having, because there is no case fan aimed at that side of the board
  • An all-in-one liquid cooler is not an option here, and we would rather explain why than leave you wondering. Mounting a radiator in a Ridge requires a graphics card under 175mm long, which no card at this level is. Air cooling is not a shortcut in this case, it is the only correct answer
  • Mounted with Thermalright's own paste, applied by hand rather than using a pre-applied pad
• 🔲 Motherboard: ASRock B650I Lightning WiFi (Mini-ITX)
  Click or tap for deeper spec info

  • 8+2+1 power phase design with Dr.MOS on an 8-layer PCB. Plain English translation: more power delivery than this processor will ever ask for, particularly with a 90W ceiling in place
  • The same board as Ridge One and Ridge Two, and that is a deliberate decision rather than a saving we hid. There are pricier Mini-ITX boards whose headline feature is a PCIe 5.0 slot for the graphics card. In this chassis that buys you nothing at all: the Ridge connects the card through a rigid riser which runs at PCIe 4.0 whatever the board offers. We would rather put the money into the machine than into a number you cannot use
  • Two M.2 slots, one Gen5 and one Gen4. Only one is used on this build. The Gen5 M.2 is wired straight to the processor and does not pass through the riser, so it runs at full speed and a Gen5 drive later is a real option
  • Two DDR5 slots supporting up to 128GB, both used here with a matched pair
  • Wi-Fi 6E and Bluetooth 5.2 built in, aerial supplied. 2.5 Gigabit Ethernet
  • Rear I/O runs to a 10Gbps USB-C, three 10Gbps USB-A and two more USB-A, which is a lot of ports for a board this size
  • Realtek ALC897 audio. Fine through headphones and speakers, and a step below the ALC1220 on our larger boards. If you use a USB headset or an audio interface it makes no difference at all
  • PC36 only uses motherboards chosen for stability and longevity. See our Trusted brands page
• 📏 Memory / RAM: 32GB (2×16GB) DDR5-6000 CL36
  Click or tap for deeper spec info

  • A matched pair running dual channel at DDR5-6000 CL36, enabled via EXPO in the BIOS before it ships
  • DDR5-6000 is the speed Ryzen on AM5 runs best at. It keeps the memory controller and the memory running in step with each other, which is where the platform is happiest, and going faster on paper often makes it slower in practice
  • 32GB is the right amount for a machine at this level. It covers modern games at maximum settings with plenty spare for a browser, Discord and a stream running alongside
  • Both memory slots are used, so a later capacity increase means replacing the pair rather than adding to it. That is a Mini-ITX reality rather than a choice we made
  • Specification guaranteed, model may vary. Happy to confirm the exact part on request
• 💾 Storage: 1TB NVMe PCIe 4.0 SSD (TLC)
  Click or tap for deeper spec info

  • Rated at 5,000MB/s or better. Games load in seconds and Windows feels instant
  • TLC rather than QLC on this tier. TLC holds its speed during long sustained writes where a cheaper QLC drive slows down, and it has better write endurance. It costs more and we fit it here because a machine at this level is likely to be moving large files around
  • We fit 1TB as standard across the whole range rather than varying it by price, so comparing our machines to each other is straightforward. The 2TB option is below, and at this price point it is the upgrade we would encourage most
  • The board's second M.2 slot is free, so adding a second drive later is a real option, and it can be a Gen5 drive if you want one
  • Specification guaranteed, model may vary. Happy to confirm the exact part on request
• 🎮 Graphics card: NVIDIA GeForce RTX 5070 Ti 16GB
  Click or tap for deeper spec info

  • Blackwell, 16GB of GDDR7 on a 256-bit bus. A very strong 1440p card and a genuinely capable 4K one with DLSS doing the upscaling
  • This is the ray tracing tier. If you have been reading that Radeon is behind NVIDIA on ray tracing in our other listings, this is the listing where that stops being a caveat. Heavy ray tracing at 1440p is comfortable here
  • DLSS 4 with Multi Frame Generation, which is the reason a card at this level plays 4K properly rather than merely acceptably. Transformer-model upscaling is a real visual step up from what came before
  • Dual NVENC encoders. If you stream or record seriously, NVENC is what most streaming software is built around and it remains the encoder to have. AV1 supported for both encode and decode
  • Card selection matters more here than anywhere in the range. With the side fans fitted the card can be up to 57mm thick, and the case takes cards up to 335mm long. Most 5070 Ti models fit, but not all of them do, so we select and verify a model that goes in properly with the fans in place. We do not ask you to remove them to make a card fit
  • Powered by a 12V-2x6 connector. In a case this size the bend radius on that cable is a real consideration, so it is routed with proper clearance rather than folded to make it reach - one of the several things that make a Ridge take longer to build than a tower
  • The chipset and VRAM are guaranteed: it will always be an RTX 5070 Ti with 16GB. The AIB brand varies with availability, and we only use established manufacturers. See our Trusted brands page for more info
• 🧰 Case: Fractal Ridge, Black
  Click or tap for deeper spec info

  • 12.6 litres. 374 × 110 × 395mm standing up, or 360 × 375 × 115mm lying down. Mini-ITX, three expansion slots
  • A fabric front panel set into a CNC-machined aluminium frame. It is meant to sit out in a room rather than under a desk, and it does not look like a computer
  • Feet are supplied for both orientations. Stand it upright beside a monitor, or lay it flat under a television like an amplifier. On this tier we would strongly recommend upright, because it cools measurably better and this build gives the case the most heat to move of anything in the range
  • Two 140mm Fractal Aspect 14 PWM fans included in the side panel as intake, feeding air directly onto the graphics card
  • Sandwich layout. The motherboard sits on one side and the graphics card on the other, connected by a rigid PCIe riser card rather than a ribbon. That is what makes a case this thin possible, and it means the card gets its own air rather than sharing with the processor. The riser runs at PCIe 4.0, which on a card at this level costs a fraction of a percent and is not something you would ever see in a game. It is also why we fit the board we do rather than a pricier one - see the motherboard notes above
  • Graphics cards up to 335mm long, CPU coolers up to 70mm tall, SFX and SFX-L power supplies
  • Four 2.5 inch drive mounts, with all four brackets in the box. No 3.5 inch bays
  • Front I/O is USB-C, two USB-A and a combined headphone and microphone jack
  • Small form factor builds take considerably longer to assemble, cable and tune than a standard tower. That work is included in the price rather than added to it, and on this build it is the most of it
• 🌬️ Case cooling: 2 × 140mm side intake, included with the case
  Click or tap for deeper spec info

  • Two Fractal Aspect 14 PWM fans in the side panel, blowing straight onto the graphics card through its own perforated panel. Simple, and effective, because the card has its own side of the sandwich and its own air
  • Proper four-pin PWM fans, not the three-pin fans usually bundled at this price, so they can be slowed right down when the machine is idle. Plain black, no lighting
  • The case also has three 80mm mounts in the top which Fractal do not populate. 80mm fans have to spin fast to move meaningful air, and we would rather not add that noise for a small gain. If you want them fitted, ask on live chat and we will discuss it honestly rather than just selling you three fans
  • Fan curves are set by hand before dispatch and verified through our standard stress testing rather than assumed. On this build that tuning is the difference between a machine you enjoy having in the room and one you resent
  • Honest expectation setting: this is the most demanding configuration we put in this case. At idle and in light use it is very quiet. Under a heavy gaming load you will hear it, and more than you would hear the same components in a full tower. Standing it upright, taking the Premier Optimisation, and giving it room to breathe all help. If silence under load is your priority above everything, a larger case is the honest answer and we will tell you that on live chat
• ⚡ Power supply: Thermaltake Toughpower SFX 850W 80+ Gold, fully modular
  Click or tap for deeper spec info

  • 850W rather than the 750W used on the tiers below, because this build asks for it. The card and processor together draw around 400W in a heavy game, and Blackwell cards are known for short transient spikes well above their rated draw. The extra headroom keeps the supply comfortable rather than working at its limit
  • SFX form factor, because that is what a case this size takes. An SFX unit is roughly half the volume of a standard ATX supply and costs considerably more for the same wattage, which is one of the hidden expenses of building small and one we would rather explain than bury
  • Fully modular, which in twelve and a half litres is a functional requirement rather than a tidiness preference. There is nowhere to put a cable you are not using
  • 80 PLUS Gold, and ATX 3.1 certified with a native 12V-2x6 cable for the graphics card - no adapters, which matters both for safety and for cable routing in a case this tight
• 🔌 Cabling: Black cabling, routed for a small chassis
  Click or tap for deeper spec info

  • Short runs, routed specifically to keep the intake path and the card's own fans clear. There is 13.8mm of routing space behind the power supply and not much anywhere else
  • The 12V-2x6 cable is routed with a proper bend radius rather than forced into the nearest gap. That connector does not tolerate being crushed against a panel, and getting it right is a large part of why this build takes the time it does
  • Fully modular, so nothing unused is installed
• 📶 WiFi / Bluetooth / Ethernet: Wi-Fi 6E, Bluetooth 5.2 and 2.5G Ethernet, included
  Click or tap for deeper spec info

  • Built into the ASRock B650I Lightning WiFi. No separate adapter needed, and the aerial is supplied in the box
  • Wi-Fi 6E adds the 6GHz band, which is far less congested than 2.4 and 5GHz in a busy household. It is plenty of wireless for anything you will do on this machine
  • 2.5 Gigabit wired Ethernet, which we would still recommend over wireless for competitive play
• 🪟 Operating system: As chosen by you from the listing options below. Windows 11 Home (OEM) is recommended.
• 🧹 Setup and optimisation: PC36 High-Class Standard. Full stress test with certificate, bloat-free installation, and BIOS set up properly
  Click or tap for deeper spec info

  PC36 High-Class Standard, included free with every build

  • Ready the moment you open the box. Your PC boots straight into Windows with a local account already set up. No account sign-in wall, no first-run questionnaire, no half-hour of setup before you can use the machine you just bought
  • BIOS updated and configured properly: manual fan curves, the 90W package power ceiling set, EXPO enabled, Secure Boot enabled
  • Vanilla Windows 11 installation if you choose Windows, with no bloatware added by us, and all drivers loaded and ready to go
  • Full stress test with certificate. Every system is torture tested on CPU, RAM and GPU before dispatch, and ships with the certificate to prove it

  PC36 Premier Optimisation, available in the listing options

  • CPU tuning to bring thermals and noise down with minimal performance loss, plus a deeper strip and debloat of Windows and a hand-tuned fan profile
  • This is the build in the whole range where it does the most good. The most heat in the least space means the fan curve and the processor voltage decide how the machine feels to live with. If you are spending this much on a small computer specifically so it can live in a room with you, take this option

  PC36 Ultimate Performance Tune, available in the listing options

  • Advanced tuning: memory tune, Curve Optimiser undervolt and GPU overclock on top of everything in Premier
  • The 7800X3D has a locked multiplier, so tuning it means undervolting rather than overclocking. In this chassis that is the more valuable direction anyway - less voltage means less heat, which means lower fan speeds for the same performance
  • The graphics card is where the frames are on this build, and a properly tuned 5070 Ti has real headroom. Combined with the memory tune, this is the option to take if you want everything the hardware has
• 🛡️ Warranty: 3 years parts & labour (return to base)
  Click or tap for deeper spec info

  • Standard 3-year coverage included, parts and labour both. The same warranty as every machine we sell, regardless of price
  • Optional extended warranties in the listing options below

👁️ Transparency notes

• The processor runs to a 90W cap, which costs nothing in games and does cost time in long rendering work (click or tap to read more)

  In games it makes no meaningful difference, because the 7800X3D is unusually efficient and rarely reaches that ceiling while playing. In sustained all-core work - long video exports, heavy rendering, large compiles - this machine will finish behind the same processor in a full tower. If that kind of work is a large part of what you do, tell us on live chat and we will point you at a tower instead.

• This is the loudest build we make in this chassis: very quiet at idle, audible under a heavy load (click or tap to read more)

  A 300W class graphics card and a capped 8-core processor in 12.6 litres cannot be as quiet as the same parts in a full tower - there is simply less air and less surface area. At idle and in light use it is very quiet. Under a heavy load you will hear it. We tune the fan curves by hand, we recommend running it upright, and we would rather set the expectation than let you find out after it arrives.

• This is the top of the Ridge range, and a larger card in this chassis would be a poor idea rather than an upgrade (click or tap to read more)

  Fitting a larger card in this chassis is possible on paper and a poor idea in practice. If you want more than this, the honest answer is a bigger case, and we would rather build you the right machine than the one with the biggest number on the box.

• Photos may show a cable tie holding the graphics card, which is deliberate, permanent and routed clear of every fan (click or tap to read more)

  A card of this size and weight will sag and sway at its outer end, and in a chassis this dense that movement is a real risk to the card and to the slot it sits in. The restraint stops it, and it is part of how we make a build like this safe to own and safe to move.

• Product images are representative photos of a similar spec in the same style. Your PC will look similar but not identical. Our support team can help clarify anything you're unsure of.

🛠️ Popular upgrade options

• Quick-add upgrades. This listing has a set of one-click upgrades chosen to fit this exact build, each one priced, in the Quick-add Upgrades section on this page. Memory, storage, optimisation, the anti-sag bracket and the extended warranty are in the build options instead. Anything not shown in either place, ask us on live chat and we will price it.
• PC36 Premier Optimisation: available in the listing options below.
  Click or tap for more info

  The upgrade we would take first on this build, ahead of any hardware change. The most heat in the smallest space is exactly where hand-tuned fan curves and a proper undervolt pay off. Worth it if the machine is going somewhere you sit near it, which for most Ridge buyers is the whole point. Less relevant if it lives under a desk and you always wear a headset.

• Storage upgrade to 2TB: available in the listing options below.
  Click or tap for more info

  Worth taking on a machine at this level, since a card this capable tends to mean playing the large modern titles that run past 100GB each. The board's second M.2 slot is free, so you can also defer this and add a drive later, including a Gen5 one.

• 32GB to 64GB memory: available via live chat.
  Click or tap for more info

  Worth it if you edit video, run virtual machines, or work with large datasets alongside gaming. Not worth it for gaming alone - no current game benefits, and the money does more good elsewhere. Because both slots are occupied this means replacing the pair, so it is cheaper decided now than later.

• CPU upgrade to Ryzen 7 9800X3D: choose it from the quick-add upgrades, or speak with us via live chat.
  Click or tap for more info

  Worth it if you play at very high refresh rates in processor-limited games, where the newer chip is meaningfully quicker. It is also fully unlocked, unlike the 7800X3D, because the second-generation cache sits underneath the cores instead of on top - which means the Ultimate Performance Tune has more to work with. Less worth it if you play mostly at 4K, where the graphics card sets the pace regardless.

• White colourway: available via live chat.
  Click or tap for more info

  The Ridge comes in white as well as black, and we build it either way. Ask us before you order and we will price it up. Everything else about the machine is identical.

• Extended warranty: available in the listing options below.
• Anything else: speak with us via live chat. This is a small case with real limits, so if you have something specific in mind we would much rather discuss it before you order than have you discover a constraint afterwards.

🎯 What is this PC best for?

• 1440p gaming at maximum settings, including heavy ray tracing
• 4K gaming with DLSS, which is what this card is genuinely built around
• Competitive shooters at very high refresh rates
• Simulation games, large open worlds and heavily modded titles, where the X3D cache does its best work
• Streaming and recording with NVENC, the encoder most streaming software is built around
• Living rooms and desks where a tower would be unwelcome, and where the machine is meant to be looked at

📊 Performance estimates

Figures are given at 1440p and 4K. Performance varies with game updates, maps, settings and background apps. These are estimates, not guarantees, and they account for the 90W package power ceiling.

Fortnite - Competitive Settings (click or tap to expand)

1440p: 305-380 FPS
4K: 182-230 FPS
Native testing (no upscaling or frame generation).

Cyberpunk 2077 - Ray Tracing Medium (click or tap to expand)

1440p: 110-138 FPS
4K: 68-88 FPS
Upscaling set to Auto (DLSS / FSR / XeSS based on GPU).

Battlefield 6 - High Settings (click or tap to expand)

1440p: 138-172 FPS
4K: 83-108 FPS
Native testing (no upscaling or frame generation).

💬 Need help?

Not sure if this is the right spec for you? Ping us on live chat and we'll help you choose the perfect PC for your games, work and budget. You'll be talking to one of us, not a chatbot.