I went through purchase receipts and order records to reconstruct the real cost of my
desktop build (main rig: takashi-pc). This covers core internal parts only — CPU, GPU,
motherboard, memory, storage, case, and PSU — leaving out peripherals like the keyboard
and mouse. I confirmed the CPU/GPU against the actual running machine with lscpu/lspci,
and the model numbers match the purchase receipts.
Parts list
| Part | Model | Vendor | Purchased | Cost | Notes |
|---|---|---|---|---|---|
| CPU | AMD Ryzen 7 5700X BOX (AM4 / 8-core 16-thread / 32MB L3 / 65W TDP) | Janpara (Higashi-Ikebukuro) | 2025-02-23 | ¥25,450 | ¥24,980 minus ¥300 discount plus ¥770 shipping, 1-month member warranty, credit card |
| GPU | SAPPHIRE PULSE Radeon RX 6600 XT GAMING OC 8G GDDR6 | Janpara (Akihabara) | 2024-02-11 | ¥28,450 | ¥27,980 minus ¥300 discount plus ¥770 shipping, 1-month member warranty, paid via Paidy |
| RAM | CFD Standard DDR4-3200 16GB×2, 288-pin DIMM | Amazon | 2023-12-23 | ¥8,883 | Same order as motherboard |
| Motherboard | ASRock A520M Pro4 (AMD A520 / Socket AM4 / Micro ATX, official Japan distributor) | Amazon | 2023-12-23 | ¥8,845 | Same order as RAM |
| SSD 1 (Windows boot drive) | CFD 256GB 2.5" SATA (Toshiba) | Amazon | 2015-07-06 | ¥13,979 | My first-ever SSD, currently the Windows 11 boot drive, carried over from the previous PC |
| SSD 2 | Crucial P2 500GB M.2 NVMe (official distributor warranty, 5-year) | Amazon | 2022-01-04 | ¥5,515 | Listed at ¥5,555, minus ¥40 in Amazon points |
| SSD 3 (added) | Crucial BX500 1TB 2.5" SATA (3-year warranty, parallel import) | Amazon | 2025-08-05 | ¥9,500 | Paid via Paidy |
| SSD 4 (Windows, in active use) | Crucial MX500 500GB 2.5" SATA | Amazon | 2018-04-01 | unknown | Missing entirely from the original parts list; found via lsblk on the actual machine. Manually mounting it revealed an actively-used Windows data drive. The cost isn’t listed in the Amazon order history |
| Case | DEEPCOOL CC560 V2 (ATX / glass panel / black, Dospara-exclusive model) | Dospara | 2024-07-07 | ¥8,027 | 3-year extended warranty plan |
| CPU cooler | DEEPCOOL AK400 (120mm fan / LGA1851-1150 & AM4 compatible) | Biccamera.com | 2025-02-23 | ¥3,270 | Paid in full by credit card |
| PSU | Kuroutoshikou KRPW-PT700W/92+ REV2.0 (700W / 80 PLUS Platinum) | Unknown (likely Yahoo Auctions, no record) | unknown | est. ¥12,000–15,000 | Carried over from the previous PC. Model identified directly from the unit’s label; no purchase record survives, so the cost is estimated from period market pricing, not confirmed |
Totals
| Category | Amount |
|---|---|
| Confirmed total for everything except the PSU | ¥111,919 |
| + PSU (estimate, not confirmed) | + ¥12,000–15,000 |
| Core-parts subtotal (PSU estimate included) | roughly ¥124,000–127,000 |
Breakdown (confirmed spend): CPU 25,450 + GPU 28,450 + RAM/motherboard 17,728 + SSD 1 13,979 + SSD 2 5,515 + SSD 3 9,500 + case 8,027 + CPU cooler 3,270 = ¥111,919.
For reference, the amount spent specifically on new parts for this A520 build — excluding the 2015 256GB SSD and the PSU carried over from the previous machine — comes to ¥97,940 (CPU 25,450 + GPU 28,450 + RAM/motherboard 17,728 + SSD 2 5,515 + SSD 3 9,500 + case 8,027 + CPU cooler 3,270).
The one part with no paper trail: the PSU
Every part in this build has a confirmed purchase record except the power supply. I could identify the exact model (Kuroutoshikou KRPW-PT700W/92+ REV2.0) straight off the unit’s own label, but there’s no record of when or where it was bought — my best recollection is “probably Yahoo Auctions.” Since it’s a part carried over from an older PC, the purchase itself happened a long time ago, so I left the cost as an estimate based on period market pricing rather than a confirmed figure. Every other part in this table is nailed down from an actual receipt or order history; this is the one exception.
Update (2026-09-22): a missing SSD, and a boot-drive misunderstanding
After this post went up, checking the actual machine with lsblk turned up a drive
entirely missing from the parts list above (SSD 4 in the table, a Crucial MX500
500GB). There’s an Amazon purchase record from 2018, but no listed price.
Separately, someone pointed out that the currently running Linux system should be
booting from the NVMe drive, not “SSD 1.” Cross-checking efibootmgr against the
partition GUIDs confirmed that SSD 1 (the 256GB SATA drive) really is the boot drive
for Windows specifically — the running Linux/GRUB boots from SSD 2 (the NVMe drive)
instead. This is a dual-boot machine, so both facts are simultaneously true; there was
no actual contradiction.
While I was at it, I checked the filesystem on all four drives with lsblk -f and
mapped out which OS lives where:
| Drive | Role |
|---|---|
| SSD 1 (256GB SATA) | Windows boot drive (NTFS) |
| SSD 2 (500GB NVMe) | Arch Linux (the currently running main OS, / and /boot) |
| SSD 3 (1TB SATA) | ~500GB Windows storage (NTFS), the other ~500GB is Gentoo Linux (btrfs, labeled gentoo) |
| SSD 4 (500GB SATA) | Windows storage (NTFS, actively used — mounting it manually turned up a real game library and other data) |
Turns out this one machine has been quietly hosting three operating systems at once: Windows, Arch Linux, and Gentoo Linux.