Ro Three | RX 9070 16GB + Ryzen 7 7800X3D | Ready-to-Go Gaming PC | PC36

🪵 Ro Three

Nothing about it is modest except the way it looks

The 7800X3D is the most efficient gaming processor made, and that is the reason Ro Three works at all. Put it with a Radeon RX 9070, which has 16GB and draws 220W where its XT sibling wants over 300W, and a pairing you would expect to find in a full tower ends up in 11 litres of machined aluminium standing on a block of walnut.

Both parts are the sensible ones rather than the biggest ones, and that is deliberate. We choose a card model that fits the chassis properly rather than taking whatever is cheapest that week, and we set the processor a package power ceiling of around 90W so it never chases heat this case cannot move. In games the 7800X3D rarely goes near that anyway.

What you are left with is the top of the Ro range: high settings at 1440p, very high refresh rates in the games the X3D cache was built for, and an object you would rather have on the desk than under 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 cannot 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, and it is why this chip has stayed at the top of gaming charts for so long
  • Why we cap it at around 90W, stated plainly. The cooler that fits this case is 67mm tall. 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. We would rather you knew that than found out
  • 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 - see the setup options below
  • 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
  • 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. In a case meant to sit in front of you, that is the difference that matters
  • Top-down design, so it also pushes air across the motherboard's power stages and memory. In a chamber this small that is worth having
  • This is the cooler doing the hardest job in the Ro range, and it is why the 90W ceiling exists. Paired with an efficient X3D chip it holds temperatures comfortably in normal gaming, and it will be audible under a sustained all-core load
  • At 67mm it sets the interior to the middle position, which allows a graphics card up to 2.5 slots thick. That is the constraint the whole build is designed around, and there is more on it in the case notes below
  • 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 Ro 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 a dual chamber case the card is connected through a riser cable, and at this tier the difference between generations is a fraction of a percent you would never see in a game. We would rather put the money into the machine
  • Two M.2 slots, one Gen5 and one Gen4. Only one is used on this build. The Gen5 slot is wired straight to the processor, so a Gen5 drive later runs at full speed
  • 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. In this case that matters more than usual, because the T9's front panel has one port and nothing else
  • 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 high 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
  Click or tap for deeper spec info

  • Rated at 5,000MB/s or better. Games load in seconds and Windows feels instant
  • This is a QLC drive. It is quick for everything you will do day to day, and it slows down only during very long sustained writes such as moving hundreds of gigabytes in one go. For gaming and normal use you would not notice, and the money saved is in the graphics card instead
  • 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 on a machine at this level 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: AMD Radeon RX 9070 16GB
  Click or tap for deeper spec info

  • RDNA 4, 56 compute units, 16GB of GDDR6 on a 256-bit bus giving 640GB/s, and 64MB of Infinity Cache. 220W board power
  • The reason this card and not the XT. The RX 9070 XT is faster on paper and draws over 300W to do it, and it is a physically thicker card. In 11 litres that is not a footnote, it is the whole argument. The RX 9070 gets you most of the performance in a package this chassis can actually cool and actually fit
  • 16GB on a 256-bit bus, so there is both plenty of memory and plenty of bandwidth to feed it. This is not a card that will run short at 1440p
  • Supports FSR 4, AMD's machine-learning upscaler, which needs RDNA 4 hardware and is a real step up from FSR 3. AV1 encode and decode for streaming and recording
  • Powered by standard 8-pin PCIe connectors rather than the 12V-2x6 plug. Simpler to route in a small case, and the 850W supply has both to spare
  • Being straight about ray tracing: RDNA 4 closed a lot of the gap but NVIDIA still leads here. Where the RX 9070 wins is raster performance for the money and, in this case specifically, power draw. If heavy ray tracing is your priority, tell us on live chat and we will talk you through what that means in a chassis this size
  • Card selection matters more here than anywhere in the range. The interior allows a card up to 2.5 slots thick and 310mm long, so we select and verify a model that goes in properly rather than assuming
  • The chipset and VRAM are guaranteed: it will always be an RX 9070 with 16GB. The AIB brand varies with availability, and we only use established manufacturers. See our Trusted brands page for more info
• 🧰 Case: Jonsbo T9, Black
  Click or tap for deeper spec info

  • 11 litres. 155 × 325 × 224mm, and 3.85kg before anything goes in it. Mini-ITX only
  • 4mm aluminium alloy with steel reinforcement, sitting on a solid walnut base. Most cases at any price are folded steel with an aluminium front panel. This one is machined aluminium throughout and it feels like it. The wood is real, not a printed finish, so every one is slightly different
  • Dual chamber layout. The graphics card sits in its own compartment on one side, connected by a riser cable, with the motherboard and power supply on the other. Each side draws its own air, and that separation is the only reason a 220W card and a capped 8-core processor coexist in 11 litres
  • The interior slides to three positions, trading cooler height against graphics card thickness: 78mm of cooler with a 2-slot card, 68mm with a 2.5-slot card, or 58mm with a 3-slot card. Ro Three runs the middle position, which is the balance this build is designed around
  • Graphics cards up to 310mm long. Standard SFX power supplies only, not SFX-L
  • One 3.5 inch bay and one 2.5 inch bay, or two 2.5 inch drives. Fitting a 3.5 inch hard drive drops the graphics card limit from 310mm to 202mm, so on this build it is not an option we would recommend
  • Front I/O is a single USB-C port and a hidden power button. That is all there is. No USB-A on the front, and no headphone or microphone jack. It is a deliberate design decision by Jonsbo to keep the aluminium clean, and the board's rear panel has the rest. Worth knowing before you order if you plug things in and out often
  • Made in black and silver. We build either, so ask on live chat if you would prefer the silver
  • 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: 1 × 120mm top exhaust, fitted by us
  Click or tap for deeper spec info

  • The T9 ships with no fans at all. We fit a 120mm exhaust in the top of the motherboard chamber, which is where the heat from the processor and the power stages wants to go. On this tier it is doing real work rather than sitting there
  • Plain black, four-pin PWM, no lighting. The T9 is not an RGB case and we do not treat it like one
  • The graphics card sits in its own compartment with its own vents, so it draws cool air directly rather than sharing with the processor
  • 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 on the desk 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. Taking the Premier Optimisation and giving it room to breathe both 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 310W in a heavy game, and the extra headroom keeps the supply running in its quiet, efficient band rather than working near its limit in a case with no room to spare
  • 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 11 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. All PC36 power supplies of 750W and above are ATX 3.1 certified
• 🔌 Cabling: Black cabling, routed for a small chassis
  Click or tap for deeper spec info

  • Short runs, routed to keep the perforated panelling clear on both sides. In a dual chamber case the cabling decides whether each side actually gets the air it was designed to get
  • Two 8-pin PCIe runs to the graphics card, kept out of the airflow path rather than looped across it
  • Fully modular, so nothing unused is installed. This is where a large share of the assembly time on a T9 goes, and it is the difference between a small build that runs cool and one that does not
• 📶 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. The same test our most expensive machines get

  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 Ro 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 sit on your desk, 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. That is not a consolation prize in this chassis - it is the single most useful thing you can do to a small machine. Less voltage means less heat, which means lower fan speeds for the same performance
  • The memory tune and the graphics card overclock both add real frames on top. Worth taking if you want everything this hardware has and want it quiet with it
• 🛡️ 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 much hardware in a small case is very quiet at idle and audible in a demanding game (click or tap to read more)

  A 220W graphics card and a capped 8-core processor in 11 litres cannot be as quiet as the same parts in a full tower - there is simply less air and less surface area to work with. At idle and in light use it is very quiet. In a demanding game you will hear it. We tune the fan curves by hand to make that as pleasant as we can.

• A large part of this price is the case and the build time it takes, not only the components (click or tap to read more)

  The Jonsbo T9 is an expensive chassis and small form factor builds take considerably longer to assemble. If what you want is the most performance for the money, a micro-ATX machine will beat this at the same price and we will point you at one. Ro Three is for people who want this specific object with proper hardware inside it.

• 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 T9 buyers is the whole point. Less relevant if it lives out of earshot 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 at 1440p with settings turned up, where the graphics card sets the pace. We will tell you which of those describes your games.

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

  The T9 is made in black and silver, both with the same walnut base, and we build either. 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 high settings and high refresh rates, which is exactly what this pairing is built for
• Simulation games, large open worlds and heavily modded titles, where the X3D cache does its best work
• Competitive shooters at very high frame rates
• 4K with FSR 4 in most titles, though 1440p is where this pairing is happiest
• Desks and shelves where the machine is meant to be looked at rather than hidden
• Streaming and recording, using the card's AV1 encoder

📊 Performance estimates

Figures are 1440p. 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: 285-355 FPS
Native testing (no upscaling or frame generation).

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

1440p: 88-112 FPS
Upscaling set to Auto (DLSS / FSR / XeSS based on GPU).

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

1440p: 140-172 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.