Corsair
Corsair RM850x (2024)
$169.99Cheaper
Released 2024
Best Power Supplies · head-to-head
Corsair RM850x (2024) vs MSI MPG A1000G PCIE5
A sourced, side-by-side comparison. Corsair RM850x (2024) is cheaper at $169.99. Every spec and price links to its source.
MSI
MSI MPG A1000G PCIE5
$199.99
Released 2022-09
Which is better: the Corsair RM850x (2024) or MSI MPG A1000G PCIE5?
On the specs we track, they're closely matched. The Corsair RM850x (2024) is the cheaper at $169.99.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Corsair RM850x (2024) | MSI MPG A1000G PCIE5 |
|---|---|---|
| US price | $169.99 MSRP, black model | $199.99 MSRP |
| Brand | Corsair | MSI |
| Released | 2024 | 2022-09 |
| Wattage (W) | 850 | 1000 |
| Efficiency rating | 80plus_gold | 80plus_gold |
| Modular | full | full |
| Atx version | ATX 3.1 | ATX 3.1 |
| Pcie 5 12vhpwr | Yes | Yes |
| Fan size (mm) | 140 | 135 |
| Warranty years | 10 | 10 |
| Release year | 2024 | 2022 |
Sources — Corsair RM850x (2024): corsair.com (verified 2026-06-19). MSI MPG A1000G PCIE5: newegg.com (verified 2026-06-19).
What's the difference between the Corsair RM850x (2024) and MSI MPG A1000G PCIE5?
Where the two actually differ on the specs we track (2 of 7). Matching specs are omitted.
- Wattage (W): Corsair RM850x (2024) 850 vs MSI MPG A1000G PCIE5 1000
- Fan size (mm): Corsair RM850x (2024) 140 vs MSI MPG A1000G PCIE5 135
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Corsair RM850x (2024)
No sourced tester review yet.
MSI MPG A1000G PCIE5
Only one whitelisted tester (Tom's Hardware) lab-tested this exact model. It praised the unit's exceptional power quality, tight 12V regulation and low operating temperatures, while flagging an aggressive fan that turns loud above 500W, slack OCP/OPP thresholds, a high-load efficiency drop, and a steep price. (1 sourced review, 1 lab-tested.)
Praised: Exceptional power quality: max 22 mV ripple on 12V and tight <0.8% 12V regulation; Excellent build quality with all-Japanese capacitors and future-proof ATX 3.0 support; Runs cool at all loads with high low-load efficiency.
Flagged: Aggressive fan profile becomes clearly audible above ~500W and hits max speed by 800W; Slack OCP/OPP protections set too high (>140% current, >1300W before shutdown); Sharp efficiency drop at high loads, keeping it to 80Plus Gold rather than Platinum.