Verified product record
This record combines official specifications with a timestamped Saudi-market price source. It is a product record, not a claim of hands-on testing.
How to use this record
- Match the exact model and regional SKU.
- Open the cited source and recheck the live price before purchase.
- Validate socket, memory, dimensions, power and firmware requirements against the rest of the build.
- Use the evidence and update log to see what was verified and when.
Recorded market context: Geekay Games Saudi Arabia, checked 2026-08-12.
Product record and buying decision
This record brings published specifications, dated price evidence and testing status together without turning them into an untested recommendation.
Documented specifications and limits
- Brand
- Cooler Master
- Model
- GX III Gold 850 ATX 3.1
- SKU
- EAN 4719512136355 / MPX-8503-AFAG
- Market
- Saudi Arabia
- Retailer and seller
- Geekay Games Saudi Arabia
- Price verified
- 2026-08-12
- Availability at verification
- Current availability not verified
- Compatibility and interface
- ATX 3.1; fully modular; 24-pin, EPS, PCIe 6+2 and 12V-2x6; compatible with the MasterBox 520.
- Power or capacity
- 850W; 80 PLUS Gold; at least 90% efficiency at typical load; OPP, OVP, OTP, OCP, SCP and UVP protections.
- Dimensions or form factor
- 160 × 150 × 86 mm; 135 mm fan; MasterBox 520 allows up to 200 mm and recommends up to 170 mm.
- Published warranty
- Ten years according to Cooler Master; verify regional and retailer warranty terms.
- BYT01 evidence status
- Not tested
Before buying
- Match the name, SKU and region to the retailer page and box.
- Reopen the price URL and verify seller, stock and shipping cost.
- Verify BIOS, QVL, dimensions, power and connectors against the rest of the build.
Decision actions
Sources and update log
2026-08-12 | تحقق مباشر من السعر 949 SAR والتوفر | https://www.geekay.com/saudi_en/cooler-master-gx-iii-850-gold-power-supply 2026-08-12 | تحقق من ATX 3.1 والأبعاد والموصلات والكفاءة والضمان | https://www.coolermaster.com/en-global/products/gx-iii-gold-850-atx-3-1.html
Evidence limit: this is a product record, not a hands-on review or numeric rating. Future measurements must disclose the sample source, method, conditions and repeatable results.
Same-category records to compare
These records share a category; this alone does not establish suitability for your needs or budget. Compare intended use, configuration and upgrade limits before choosing. Prices, when shown, are dated snapshots, not current offers or stock confirmation. A price difference is not a performance or value verdict.
| Product | Dated price snapshot | Snapshot difference | Snapshot date | Documented compatibility | |
|---|---|---|---|---|---|
 Corsair RM750e (2025) 750W ATX 3.1 | — | Not comparable | — | ATX 3.1; PCIe 5.1; fully modular Type 4 cables; native 12V-2x6 cable; 2 EPS, 3 PCIe, 6 SATA and 2 PATA connectors. | Compare |
 Seasonic VERTEX GX-1000 ATX 3.1 | — | Not comparable | — | ATX 3.1 and PCIe 5.1 desktop power supply; fully modular cabling; native 12V-2x6 connector for compatible graphics cards. | Compare |
Reviews and testing
No qualified hands-on review is linked to this record yet, so no score or Pros/Cons are displayed.
Product-record FAQ
Is the Cooler Master GX III Gold 850W ATX 3.1 price live?
No. It is a dated snapshot from a direct retailer URL. Reopen the price source and verify the seller, availability and checkout total before buying.
Did BYT01 test this product hands-on?
Do not assume hands-on testing unless a qualified review and repeatable test method are linked. This record separates official specifications and market evidence from physical testing.
Does a specification match guarantee compatibility?
No. Use the compatibility builder, then verify motherboard support, BIOS, QVL, dimensions, connectors and the case manual before paying.
Additional source-checked specifications
- Rated power
- 850 W
- Cabling
- Fully modular
- 80 PLUS tier
- Gold
- ATX version
- 3.1
Manufacturer specifications, not BYT01 measurements. Check the exact retail SKU and configuration.
Manufacturer source · 2026-10-18
Price and verification history
Each row is a dated snapshot from a direct retailer URL. Prices and availability may change. Automated checks preserve the last verified price when access is blocked or clear SAR data is unavailable.
| Verified on | Price | Retailer | Availability | Source |
|---|---|---|---|---|
| 2026-08-12 79 days ago | 949.00 SAR | Geekay Games Saudi Arabia | Available | Open source |
Latest automated check: 2026-09-16 22:33:13 — The retailer returned HTTP 403, so the previously verified price was preserved.
