Flux Two | RX 9070 XT 16GB + Ryzen 7 7800X3D | Ready-to-Go Gaming PC | PC36

🪶 Flux Two

Refined strength, effortless flow

Flux Two is the middle of the Flux line and, for most people, the one that makes the most sense. A Ryzen 7 7800X3D and a Radeon RX 9070 XT 16GB is a pairing built for high refresh 1440p and genuine 4K, and it sits inside the same walnut and steel Antec Flux as the rest of the range, with no lighting anywhere in the build. Quiet, grounded, and considerably faster than it looks.

🧬 Built to last, designed to evolve

This system is built on AMD's modern AM5 platform, which offers one of the best CPU upgrade paths available today. That means you can start with a great processor now and still have room to move up the stack later, while keeping the same motherboard, case, power supply and most of your core components. GPU, storage and cooling are all easily upgradable so the system can grow with your needs over time.

📃 Specifications

• 🧠 CPU: AMD Ryzen 7 7800X3D
  Click or tap for deeper spec info

  • 8 cores, 16 threads of Zen 4, with 96MB of total cache thanks to AMD's 3D V-Cache
  • That cache is the whole point. Games spend a lot of their time waiting on memory, and a chip that can keep more of the game world close to the cores spends less time waiting. It is why the 7800X3D beats processors that cost considerably more in gaming, while drawing less power doing it
  • Around 60 to 80W under a gaming load, which is a large part of why this machine stays quiet. Less heat going in means less noise coming out
  • AM5 keeps the upgrade path open. A 9800X3D drops straight into this board when you want it
• ❄️ CPU cooler: Thermalright Peerless Assassin 120, dual tower air cooler
  Click or tap for deeper spec info

  • Dual tower, six heat pipes, twin 120mm PWM fans. Plain black with no lighting and no display, which is the point on a Flux build
  • Air rather than liquid, deliberately. The 7800X3D is efficient enough that a dual tower of this size never has to work hard, and there is no pump to fail or run dry in five years
  • If you want this machine as close to silent as current hardware allows, the Noctua Pure Silence upgrade below is the serious answer, though read what we say about Premier Optimisation first
• 🔲 Motherboard: Gigabyte B650 Eagle AX (ATX)
  Click or tap for deeper spec info

  • 12+2+2 phase digital VRM with low RDS(on) MOSFETs. Plain English translation: comfortably more power delivery than a 7800X3D asks for, and enough to run a 9800X3D at full tilt later without the board becoming the weak link.
  • X3D processors are power limited by design rather than power hungry, so a higher tier board buys almost nothing you would ever measure on a build like this. We would rather that money sat in the graphics card, and on this build it has
  • Three M.2 slots, one PCIe 5.0 and two PCIe 4.0, with a thermal guard on the primary. Two of them stay free, so storage can be added later without removing anything
  • Four DDR5 slots supporting EXPO and speeds well beyond what this build ships with
  • Wi-Fi 6E, Bluetooth 5 and Gigabit Ethernet onboard, with the aerial supplied in the box
  • 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

  • DDR5-6000 CL36 is the sweet spot for AM5. It is the speed AMD's memory controller runs in its most efficient mode, and pushing past it usually costs more than it returns
  • EXPO is enabled in BIOS before the machine leaves us. A surprising number of prebuilt PCs ship with fast memory running at slow default speeds because nobody turned the profile on
  • 32GB is the right amount alongside a card of this tier: enough to game with a browser, Discord and a stream running, and enough for real creative work
  • Two of the four slots stay free, so 64GB later means adding rather than replacing
  • 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

  • TLC flash rated at 6,500MB/s or better, which holds its speed on long sustained writes rather than dropping off once a cache fills. From this tier upwards we do not fit QLC drives
  • Higher write endurance than the entry-tier alternative, which matters if you record gameplay, edit video, or simply install and uninstall a lot
  • Two more M.2 slots stay free, one of them PCIe Gen5, so adding storage later is straightforward and does not mean replacing anything
  • Specification guaranteed, model may vary. Happy to confirm the exact part on request
• 🎮 Graphics card: AMD Radeon RX 9070 XT 16GB
  Click or tap for deeper spec info

  • A 1440p ultra card with real 4K capability, and one of the strongest cards available for the money in ordinary rasterised games, which is still what most of your library runs on
  • 16GB of VRAM, which is the specification that keeps a card comfortable as game textures grow. It matters more over the life of a machine than a few frames per second either way
  • FSR 4 for upscaling and frame generation, which is a substantial step up from earlier AMD versions and now genuinely competitive
  • Where we would be straight with you: in heavy ray tracing the RTX 5070 Ti is ahead of this card, and NVIDIA's NVENC encoder is still the one most streaming software prefers. If either of those is central to how you use a PC, say so on live chat and we will talk you through the swap. For everything else, the 9070 XT is the better value of the two by a clear margin
  • The chipset and VRAM are guaranteed: it will always be an RX 9070 XT with 16GB. The AIB brand varies with availability, and we only use established manufacturers. See our Trusted brands page for more info
• 🧰 Case: Antec Flux, ATX mid tower with walnut front
  Click or tap for deeper spec info

  • Steel mesh front panel with a real walnut wood inlay, and 4mm tempered glass on the side. A case that can sit in a living room without looking like gaming furniture
  • Takes graphics cards up to 408mm and CPU coolers up to 180mm tall, so even the largest RX 9070 XT designs fit with room to spare
  • Radiator support up to 420mm in the front and 360mm in the top, if you ever want to move this build to liquid
  • Dust filters throughout, which matter more on a high-airflow machine you intend to keep for years than on one you replace
  • Takes boards up to E-ATX, so a future rebuild is not constrained by the chassis
• 🌬️ Case cooling: 5 fans included with the case. Three 120mm front intake, one 120mm reverse fan on the power supply shroud, one 140mm rear exhaust
  Click or tap for deeper spec info

  • The reverse fan on the power supply shroud is what the Flux is named for, and with a card of this class in the machine it earns its place. It sits under the graphics card and blows cool air upward onto the back of the card, into the space that is normally the hottest and deadest part of any tower
  • Graphics cards exhaust downward as well as sideways, so in a conventional case that air has nowhere to go and simply recirculates. The 9070 XT produces a lot of it. Here it gets pushed straight back into the main airflow path and out of the rear
  • Three 120mm intakes across the front, a 140mm rear exhaust, and positive pressure inside the case so dust comes through the filters rather than through every gap in the chassis
  • All five fans are plain black with no lighting, which is the point of this build. The case does include an ARGB and PWM hub, so if you ever want to add lit fans yourself the wiring is already there
  • Fan curves are tuned before dispatch, and airflow is verified through our standard stress testing rather than assumed
• ⚡ Power supply: Deepcool PL750D 750W 80+ Bronze
  Click or tap for deeper spec info

  • ATX 3.1 certified, built to absorb the brief power spikes modern graphics cards produce rather than tripping over them. That matters more on this build than on most: the 9070 XT is a card known for short, sharp transient spikes well above its rated draw, and an older supply without ATX 3.1 headroom is exactly what shuts down when one arrives
  • Cybenetics ETA Silver rated, an independent efficiency measurement taken across the full load range, which in practice is a more useful signal than the 80+ badge on its own
  • The RX 9070 XT runs from standard 8-pin PCIe connectors, supplied. The unit also carries a native 12V-2x6 PCIe 5.1 cable, which is not needed today but means a future NVIDIA card plugs straight in with no adaptor
  • 750W is comfortable for this build and for a step up to an RTX 5070 Ti. If you expect to go as far as an RTX 5080 later, take the 850W upgrade below and do it once
  • Fixed cables rather than modular, which in a tower like this makes no practical difference. The supply sits in the floor under a shroud, so the cables this build does not use go into the dead space behind and below, where nothing is visible through the glass
• 🔌 Cabling: Stock black cabling, neatly arranged
  Click or tap for deeper spec info

  • Visible runs are finished cleanly and the rear chamber is kept tidy but not overtightened, so future upgrades stay straightforward
  • Braided cable extensions in your choice of colour are available from the upgrade options, though on a build this deliberately plain most people leave them alone
• 📶 WiFi / Bluetooth / Ethernet: Wi-Fi 6E, Bluetooth 5 and Gigabit Ethernet, included
  Click or tap for deeper spec info

  • Wi-Fi 6E and Bluetooth 5 are built into the Gigabyte B650 Eagle AX. No separate adapter needed, and the aerial is supplied in the box
  • Wi-Fi 6E adds the 6GHz band, which is usually far less congested than 2.4 and 5GHz if your router supports it
  • Gigabit Ethernet for a wired connection, which we would still recommend for competitive play. Gigabit is far more bandwidth than any game or stream needs; wired is about latency and consistency, not speed
• 🪟 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, PBO enabled, EXPO/XMP 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
  • Includes a proper acoustic pass on the fans already fitted to this case, with curves tuned by ear and under load rather than left on a sensible default. On an air-cooled build in a mesh case this is where most of the available quiet actually comes from
  • Worth it if you want the quietest, leanest possible machine and would rather we spent the hours on it than you did

  PC36 Ultimate Performance Tune, available in the listing options

  • Advanced overclocking: RAM tune, CPU tune and GPU overclock on top of everything in Premier
  • Worth considering at this tier. The RX 9070 XT in particular responds well to tuning, and the cooling here has the headroom to support it. Ask us on live chat if you are unsure and we will tell you honestly what to expect from your spec
• 🛡️ Warranty: 3 years parts & labour (return to base)
  Click or tap for deeper spec info

  • Standard 3-year coverage included, parts and labour both
  • Optional extended warranties in the listing options below

👁️ Transparency notes

• 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.
• The walnut front is real wood, so grain and shade vary from one case to the next (click or tap to read more)

  Yours will not look identical to the photographs, which is the nature of the material rather than a fault.

• RGB heatspreaders on the RAM are not guaranteed unless the quick add-on is chosen - this is due to industry-wide supply constraints on memory
• Memory, SSD and graphics card carry a specification guarantee rather than a fixed model (click or tap to read more)

  Most parts are named models and will be what is delivered. RAM, SSD and graphics card instead carry a spec guarantee, because current market conditions make stock on those three very variable. This keeps us agile enough to offer good pricing and honest spec lists. If you want clarity on the precise models we will use, drop us a live chat on the day you're ready to purchase and we'll confirm it.

🛠️ 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.
• Need a monitor, keyboard or mouse? Scroll past the add to cart button. We've paired specific peripherals to get the best out of this build.
• Power supply upgrade to 850W 80+ Gold: choose it from the quick-add upgrades, or speak with us via live chat.
  Click or tap for more info

  The upgrade to take if there is any chance of an RTX 5080 or similar in this machine's future. The 750W unit fitted as standard is genuinely sufficient for the 9070 XT and for a 5070 Ti, but a power supply is the one part you would rather buy once than twice, and swapping it later means stripping the cabling back out. It also moves you from Bronze to Gold efficiency and to a 10 year manufacturer warranty.

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

  Worth taking on a machine at this tier, where 4K game installs and video projects both take real space. 1TB fills faster than it sounds like it should.

• Memory upgrade to 48GB or 64GB: available in the listing options below.
  Click or tap for more info

  Worth it for heavy creative work, large project files or running virtual machines. For gaming, even with a stream running alongside, 32GB is genuinely enough and the money is better spent elsewhere.

• GPU upgrade to RTX 5070 Ti 16GB: available via live chat.
  Click or tap for more info

  Worth it specifically if heavy ray tracing or NVENC streaming matter to you, as covered in the graphics card section above. In ordinary rasterised games the two cards are close enough that we would not push you towards it, and the 9070 XT is the better value. This is a swap for a particular kind of user rather than a straightforward upgrade.

• 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

  A real step up in competitive titles and anything simulation heavy, where the processor rather than the graphics card sets the ceiling. At 1440p ultra and at 4K the difference is smaller, because the graphics card is doing the limiting.

• Noctua Pure Silence acoustics upgrade: choose it from the quick-add upgrades, or speak with us via live chat.
  Click or tap for more info

  The most thorough thing we can do to make a machine quiet. It covers:

  • Every fan in the system swapped for Noctua NF-A12x25 G2, case fans and CPU cooler fans alike
  • The CPU cooler changed to a Noctua NH-D15 G2 chromax.black
  • A specific noise profile set in your BIOS: very quiet fan curves and CPU power handling tuned around them, not just the fans changed and the settings left alone

  Two honest caveats. No upgrade makes a PC truly silent, and anyone telling you otherwise is selling something. And because the set uses 120mm fans throughout, the case's 140mm rear fan is replaced with a 120mm, which is a small step down in airflow at the rear in exchange for a considerably quieter machine overall.

  Before you consider it, read this. Most people asking us for a quieter machine do not need this upgrade. Premier Optimisation, in the listing options above, tunes the fans already in this case for the quietest operation they are capable of, alongside CPU tuning that brings the heat down at the source. It costs a fraction of the Noctua set and gets you most of the way there. The Noctua upgrade is for people who want the last few percent and know exactly why they want it. If you are not sure which of the two you are, ask us on live chat and we will tell you honestly.

• Braided cable extensions: available from the quick-add upgrades section.
  Click or tap for more info

  Available in a range of colours if you want the interior to have some contrast. On a build this deliberately understated, plenty of people prefer it without.

🎯 What is this PC best for?

• High refresh 1440p gaming at ultra settings, which is where this build is happiest
• 4K gaming at high settings, with FSR 4 where you want more headroom
• Competitive titles at very high frame rates, where the 7800X3D does the heavy lifting
• Content creation and video editing, with 16GB of VRAM and 32GB of system memory behind it
• Anyone who wants this much performance without lighting, noise, or a machine that looks like a machine

📊 Performance estimates

Figures are given at both 1440p and 4K. Performance varies with game updates, maps, settings and background apps. These are estimates, not guarantees.

Fortnite - Competitive Settings (click or tap to expand)

1440p: 300-380 FPS
4K: 170-220 FPS
Native testing (no upscaling or frame generation).

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

1440p: 95-120 FPS
4K: 55-70 FPS
Upscaling set to Auto (DLSS / FSR / XeSS based on GPU).

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

1440p: 150-185 FPS
4K: 85-105 FPS
Native testing (no upscaling or frame generation).

DaVinci Resolve - PugetBench Standard (click or tap to expand)

Estimated score: 7,000-7,500

💬 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.