4K high-settings gaming PC build
From 1440p ultra to 4K high, with headroom for heavy 3D work.
Total and expected performance
| Total (JP prices) | ¥495,010 |
|---|---|
| Tier | High-end — 1440p ultra to 4K high. Headroom for heavy 3D and multitasking |
| PassMark | CPU 50,841 / GPU 29,945 |
| Power | Peak load 392W / recommended 600W / PSU in this build 650W |
Parts
| Category | Part | Key specs | Price | Price source |
|---|---|---|---|---|
| CPU | Core Ultra 5 250KF Plus | Socket 1851 / 18コア / TDP 125W | ¥39,586 | 楽天市場（09-11） |
| CPU cooler | ARCTIC Liquid Freezer III Pro 420 AIO CPU水冷クーラー（VRMファン搭載、AMD AM5/AM4・Intel LGA1851/LGA1700対応） | AIO / 420mm | ¥17,980 | Amazon.co.jp |
| Motherboard | ASRock B860M Pro-A WiFi | LGA1851 / B860M / Micro ATX | ¥17,800 | 価格.com（09-12） |
| Graphics card | GeForce RTX 4070 SUPER | VRAM 12GB / TDP 220W | ¥231,980 | 楽天市場（09-11） |
| Memory | Corsair Vengeance 32 GB | 32GB / DDR5 / 4800MT/s | ¥63,800 | Yahoo!ショッピング（09-10） |
| SSD | Kingston NV2 (Phison E21T + Kioxia BiCS5 1Tb) 2 TB | 2000GB / PCIe 4.0 x4 / M.2 2280 | ¥49,800 | Yahoo!ショッピング（09-02） |
| Power supply | ADATA XPG Core Reactor II | 650W / GOLD / ATX | ¥55,282 | 価格.com（09-09） |
| Case | Thermaltake Core P3 TG Pro オープンフレーム ATX PCケース | GPU ≤330mm / cooler ≤180mm | ¥18,782 | Amazon.co.jp |
Prices are actual Japanese retail prices with the capture date. Check each shop for stock and current pricing. Amazon links are affiliate links.
Why these parts
- At 4K the GPU decides the frame rate, so the budget leans that way.
- PSU sizing uses both the GPU maker's recommendation and the sum of part maximums.
- Cooling is matched to the heat, and checked against the case dimensions.
Best for: For 4K monitors and maxed-out settings
Build check
24 checks run automatically (socket, memory, slots, clearances, power). 16 pass and 0 fail in this build.
| Verdict | Check | Detail |
|---|---|---|
| ? | CPU cooler socket support | No socket-support data for this cooler／Check that the cooler supports 1851 |
| ? | Graphics card length | GPU length is unknown／Check the product dimensions |
| ? | PSU length | PSU length is unknown／Check the product dimensions |
“?” means the data needed for that check is missing. We don't call unknown things fine — check the product page.
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