1000W PSU Tier List
1000W power supplies ranked by electrical performance, noise levels, build quality, and modern connector support.
S
ASUS ROG Strix 1000W 80+ Platinum Fully Modular
ASUS ROG Strix 1000W Platinum uses GaN MOSFETs for genuine Platinum efficiency with excellent transient response and near-silent operation. The GPU-first voltage stabilizer is a real engineering feature, not marketing fluff, making it one of the best-performing 1000W units available. 
be quiet! Power Zone 2 1000W 80+ Platinum ATX 3.1
be quiet! Power Zone 2 1000W hits Platinum efficiency with Cybenetics certification, ATX 3.1 compliance, and the brand's signature low-noise engineering at a competitive position. Zero RPM mode and proven be quiet! fan design make this one of the quietest high-wattage options available. 
Corsair RM1000x 1000W 80+ Gold ATX 3.1
The 2024 RM1000x on Corsair's latest platform delivers ATX 3.1/PCIe 5.1 compliance, native 12V-2x6, excellent voltage regulation, and very low noise. It's the benchmark 1000W Gold unit — hard to find a meaningful weakness at this wattage. A
SilverStone SX1000 Platinum 1000W SFX-L Fully Modular
SilverStone SX1000 Platinum is a well-established SFX-L 1000W Platinum unit that's been refined through revisions. Excellent for SFF builds, but the older platform lacks ATX 3.x compliance and native 12V-2x6, requiring an adapter for modern GPUs. 
Seasonic Focus GX 1000W 80+ Gold ATX 3.1
Seasonic Focus GX 1000W is a well-validated ATX 3.1 platform from the OEM that manufactures PSUs for many other brands. Solid voltage regulation and Cybenetics Gold, but it doesn't quite match the quietest competitors under load and stays at Gold efficiency. 
Lian Li SP Platinum 1000W SFX ATX 3.1 White
Lian Li SP Platinum 1000W is a rare SFX Platinum unit at this wattage, making it the go-to for small form factor builds needing serious power. SFX form factor inherently means a smaller, louder fan and less thermal headroom than full ATX units. 
Lian Li EDGE1000W 1000W 80+ Gold White
Lian Li EDGE 1000W stands out with its L-shaped design for improved cable routing and an integrated USB/fan hub — genuinely useful features beyond the PSU basics. ATX 3.1 compliant with Cybenetics Gold, though the unique form factor may not suit every case layout. 
Lian Li EDGE1000W 1000W 80+ Gold Black
Identical to the white EDGE 1000W in every functional respect — same platform, same hub, same ATX 3.1 compliance. Color choice is the only differentiator, so the same strengths and limitations apply. 
Lian Li SX Platinum 1000W SFX ATX 3.1 Black
Lian Li SX Platinum 1000W packs Platinum efficiency into a compact ATX form factor with ATX 3.1 compliance and a 10-year warranty. The compact 140mm fan and full modular design are well-executed, though it lacks the hub features of the EDGE series. 
be quiet! Pure Power 13 M 1000W 80+ Gold ATX 3.1
be quiet! Pure Power 13 M 1000W delivers Gold efficiency with ATX 3.1 compliance and the brand's characteristically quiet fan behavior at a reasonable position. Falls short of S-tier by being Gold rather than Platinum and using a slightly simpler topology than the Power Zone 2. 
MSI MPG A1000GS PCIe5 1000W 80+ Gold
MSI MPG A1000GS upgrades over the MAG with semi-digital monitoring, server-grade capacitors, and dual 12V-2x6 cables for future-proofing. Still Gold efficiency, but the improved component quality and feature set put it at the top of the A-tier. 
MSI MAG A1000GL PCIe5 1000W 80+ Gold
MSI MAG A1000GL is a compact, well-reviewed ATX 3.1 unit with native dual-color 12V-2x6 cable and solid performance across independent reviews. Doesn't reach S-tier due to Gold-only efficiency and a fan profile that's slightly louder than the quietest competitors. B
Corsair HX1000 1000W 80+ Platinum Fully Modular
Corsair HX1000 is a proven Platinum unit with excellent electrical performance, but it's an older pre-ATX 3.0 design lacking native 12V-2x6 support. Still a reliable workhorse, but buying an older platform in 2026 means adapter cables and missing modern compliance. 
Corsair RMX 1000W 80+ Gold Fully Modular
The 2018 RM1000x was a category leader in its era with excellent voltage regulation and low noise, but it's now two generations behind — no ATX 3.x, no native 12V-2x6, and Gold efficiency. Buy the 2024 version instead unless you find this at a steep discount. 
Corsair RM1000e 1000W 80+ Gold ATX 3.1 PCIe 5.1
Corsair RM1000e is ATX 3.1 compliant with native 12V-2x6, but it's positioned as a budget alternative to the RM1000x with a simpler topology and fewer premium components. It works fine, but the RM1000x exists at a modest step up and is meaningfully better. 
Thermaltake Toughpower GT 1000W 80+ Gold ATX 3.1
Thermaltake Toughpower GT 1000W checks the ATX 3.1 box with native 12V-2x6 and flat cables, but it has very few reviews and Thermaltake's PSU track record is inconsistent across product lines. Japanese main capacitors only (not all caps) is a subtle but real distinction. 
EVGA SuperNOVA 1000 T2 80+ Titanium Fully Modular
EVGA SuperNOVA 1000 T2 was a top-tier Titanium unit with outstanding efficiency, but EVGA has exited the PC hardware market, making warranty support uncertain. Titanium efficiency is still impressive, but the lack of ATX 3.x and questionable future support are real concerns. 
EVGA 1000 G6 80+ Gold Fully Modular
EVGA 1000 G6 was a compact, well-performing Gold unit, but EVGA's exit from PC hardware makes warranty claims a gamble. The pre-ATX 3.0 platform also lacks native 12V-2x6, putting it behind current-gen competitors. 
ASUS TUF Gaming 1000W 80+ Gold Fully Modular
ASUS TUF Gaming 1000W Gold is a solid, military-grade-tested unit with ATX 3.0 compliance, but it's Gold efficiency on an older ATX 3.0 (not 3.1) platform. Reliable and well-built, but newer competitors offer more for similar or less. 
NZXT C1000 Gold 1000W 80+ Gold ATX 3.1
NZXT C1000 Gold is a clean ATX 3.1 unit with zero fan mode and 100% Japanese capacitors, but NZXT doesn't manufacture PSUs and the underlying OEM platform is less documented. A safe but unremarkable choice that doesn't stand out against stronger competitors. C
GIGABYTE GP-UD1000GM PG5 1000W 80+ Gold PCIe 5.0
Gigabyte UD1000GM PG5 Rev2.0 adds PCIe 5.0 support to the original UD1000GM platform, but Gigabyte's PSU reputation took a serious hit with earlier exploding PSU issues. The Rev2.0 addresses some concerns, but limited independent validation and brand trust issues remain. 
Rosewill VMG 1000W 80+ Gold ATX 3.1 PCIe 5.1
Rosewill VMG 1000W claims ATX 3.0/3.1 compatibility with Gold efficiency at a low price, but Rosewill is a budget brand with no independent professional PSU reviews validating this platform. The 5-year warranty — half the industry standard for quality units — signals lower confidence in longevity. 
ES1000 1000W 80+ Gold Fully Modular ATX 3.0
This unbranded ES1000 claims ATX 3.0 and PCIe 5.0 at a very low price point, but the lack of a recognizable brand, absent independent reviews, and vague component sourcing make it a gamble at 1000W. It may work, but you're trusting unverified claims with expensive components downstream. 
ARESGAME AGT 1000W 80+ Gold Fully Modular
ARESGAME AGT 1000W offers a 10-year warranty and compact design, but ARESGAME is a budget brand with no independent professional PSU teardowns or reviews confirming its claims. The platform is unverified, and at 1000W the risk of poor transient response or protection circuit failures is not trivial. D
GIGABYTE GP-UD1000GM 1000W 80+ Gold Fully Modular
The original Gigabyte UD1000GM is a pre-ATX 3.0 Gold unit from a brand whose PSU line had well-documented safety issues. No native 12V-2x6, no ATX 3.x compliance, and the brand baggage makes this impossible to recommend when better options exist. 
Apevia ATX-MT1000W 1000W 80+ Platinum PCIe 5.0
Apevia claims 80+ Platinum and PCIe 5.0 at a suspiciously low price from a brand with no history of producing Platinum-tier PSUs. No independent professional review has validated these efficiency claims, and Apevia's track record in PSU quality is poor. 
1000W 80+ Gold Fully Modular ATX 3.1 PCIe 5.1
A completely unbranded 1000W unit claiming ATX 3.1 and 80+ Gold with no manufacturer identity, no independent reviews, and no verifiable track record. At this wattage, an unvalidated PSU is a genuine risk to every component in your system. F
None
The 1000W PSU tier list was last updated . Some products may be missing or not added yet. We will try to include them in our next update.
1000W PSU Criteria
S-tier 1000W power supplies combine tight voltage regulation, clean ripple suppression, high efficiency (Platinum or better), quiet fan profiles with zero-RPM modes, and full ATX 3.1/PCIe 5.1 compliance with native 12V-2x6 connectors. They use 100% Japanese capacitors rated at 105°C, come from platforms with verified independent reviews (from outlets like Cybenetics, TechPowerUp, or Tom's Hardware), and carry 10-year warranties that reflect the manufacturer's confidence in longevity. These units don't just meet spec — they do so with headroom to spare under transient loads from modern GPUs.
Mid-tier units are competent but make visible compromises. They might be 80+ Gold instead of Platinum, use older ATX 2.x platforms that bolt on a 12VHPWR adapter rather than offering native support, have louder fan curves under load, or come from brands with less transparent component sourcing. A B-tier unit will power your system reliably and safely, but it may run warmer, spin its fan more aggressively, or lack the transient response needed for the most demanding GPU power spikes. C-tier units work but feel like they're from a generation behind — missing ATX 3.x compliance, shorter warranties, or platforms that haven't been independently validated.
D and F tier products have red flags that should steer buyers away. These include unverified efficiency claims from unknown OEMs, suspiciously low pricing that suggests corner-cutting on capacitor quality or protection circuits, warranties under 7 years, platforms with no independent professional reviews, or designs that claim Platinum certification from brands with no track record of achieving it. A 1000W PSU that fails under transient loads or delivers noisy power can damage expensive components — the stakes are too high to gamble on unproven hardware.
Related Tier Lists
850W PSU Tier List
1600W PSU Tier List
Power Conditioner Home Theater Tier List
Smart Plug Power Strip Tier List
1200W PSU Tier List
Portable Space Heater Tier List
GPS Running Watch Tier List
1TB Gen 5 NVMe Tier List
OLED TV Tier List
RGB Video Light Tier List
Center Channel Speaker Tier List
Foot Warmer Electric Tier List
Smart Smoke Detector Tier List
Laser Printer Tier List
XLR Streaming Microphone Tier List
A
Tier
Product Title
Placeholder reason.
Pros
Cons