be quiet!
be quiet! Pure Power 12 M 850W
$134.9Cheaper
Released 2023-02
Best Power Supplies · head-to-head
be quiet! Pure Power 12 M 850W vs MSI MPG A1000G PCIE5
A sourced, side-by-side comparison. be quiet! Pure Power 12 M 850W is cheaper at $134.9. Every spec and price links to its source.
MSI
MSI MPG A1000G PCIE5
$199.99
Released 2022-09
Which is better: the be quiet! Pure Power 12 M 850W or MSI MPG A1000G PCIE5?
On the specs we track, they're closely matched. The be quiet! Pure Power 12 M 850W is the cheaper at $134.9.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | be quiet! Pure Power 12 M 850W | MSI MPG A1000G PCIE5 |
|---|---|---|
| US price | $134.9 MSRP (USD) | $199.99 MSRP |
| Brand | be quiet! | MSI |
| Released | 2023-02 | 2022-09 |
| Wattage (W) | 850 | 1000 |
| Efficiency rating | 80plus_gold | 80plus_gold |
| Modular | full | full |
| Atx version | ATX 3.0 | ATX 3.1 |
| Pcie 5 12vhpwr | Yes | Yes |
| Fan size (mm) | 120 | 135 |
| Warranty years | 10 | 10 |
| Release year | 2023 | 2022 |
Sources — be quiet! Pure Power 12 M 850W: bequiet.com (verified 2026-06-19). MSI MPG A1000G PCIE5: newegg.com (verified 2026-06-19).
What's the difference between the be quiet! Pure Power 12 M 850W and MSI MPG A1000G PCIE5?
Where the two actually differ on the specs we track (3 of 7). Matching specs are omitted.
- Wattage (W): be quiet! Pure Power 12 M 850W 850 vs MSI MPG A1000G PCIE5 1000
- Atx version: be quiet! Pure Power 12 M 850W ATX 3.0 vs MSI MPG A1000G PCIE5 ATX 3.1
- Fan size (mm): be quiet! Pure Power 12 M 850W 120 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.
be quiet! Pure Power 12 M 850W
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.