Seasonic Vertex GX-850
Seasonic Vertex GX-850 Review & Specifications
The Seasonic Vertex GX-850 by SEASONIC is a power supply unit that provides 850 watts of power output. This unit follows the 3.0 standard and comes in a ATX size. It is certified with 80 PLUS®Gold and rated at Gold efficiency, reaching a peak efficiency of 90%. It features a 135 mm cooling fan with fan stop support, and is actively cooled. This PSU is modular . It delivers:
- 70 A on the 12V rail (1 rail(s))
- 20 A on the 5V rail
- 20 A on the 3.3V rail
Power Supply Performance
The Seasonic Vertex GX-850 is a high power PSU, sufficient for mainstream gaming systems and content creation workstations. It provides sufficient power for systems with modern multi-core CPUs and performance-class GPUs, offering headroom for overclocking and future upgrades.
This PSU achieves a high efficiency of 90% and carries a Gold certification. It balances cost and performance well and is a reliable choice for mainstream builds. The 12-year warranty reflects good long-term support.
From a cost-efficiency standpoint, this PSU offers low value, with a high cost of $406.0 per kilowatt. However, it compensates with high performance and top-tier efficiency, which justifies the premium for users seeking maximum reliability and power delivery. Enthusiast builders and professionals may still find it worthwhile despite the cost.
General Information
| Manufacturer | SEASONIC |
|---|---|
| Power Supply Name | Seasonic Vertex GX-850 |
| Current Price Amazon | $345 |
| Amazon Price Updated | 1 day, 1 hour ago. |
| Power Supply Available | True |
Specification
| Power Output | 850 W |
|---|---|
| ATX Version / Form Factor | 3.0 / ATX |
| Certifications | 80 PLUS®Gold |
| Efficiency Rating | Gold |
| Modular / Fanless | True / False |
| Fan Size / Fan Stop | 135 mm / True |
| Dimensions | 160 × 150 × 86 mm |
| Warranty | 12 years |
Performance
| Input Voltage | 100-240 V |
|---|---|
| Number of 12 V Rails | 1 |
| Output 12V / 5V / 3.3V | 70 A / 20 A / 20 A |
| Maximum Efficiency | 90% |
| Price per kW | 406.0 USD/kW |
Seasonic Vertex GX-850 Compared to Similar Performance PSUs
Power Supply Price / Performance Table
| Power_Supply (Desc) | Price (Desc) | Quality_&_Perf (Desc) | Q&P/Price (Desc) | USD/Kilowatt (Desc) |
|---|---|---|---|---|
|
$175
|
0.0%
|
84.3%
|
48.2%
|
145.8
145.8
|
|
|
$150
|
↓
-25.0%
|
83.9%
|
56.0%
|
125.0
125.0
|
|
|
$179
|
↓
-6.8%
|
83.9%
|
46.9%
|
149.2
149.2
|
|
|
$88
|
0.0%
|
83.1%
|
94.9%
|
103.1
103.1
|
|
|
$345
|
0.0%
|
82.4%
|
23.9%
|
406.0
406.0
|
|
|
$122
|
↓
-14.0%
|
81.6%
|
66.9%
|
116.2
116.2
|
|
|
$140
|
0.0%
|
81.3%
|
58.1%
|
139.9
139.9
|
|
|
$170
|
0.0%
|
81.3%
|
47.9%
|
169.9
169.9
|
|
|
$520
|
↓
-5.5%
|
81.0%
|
15.6%
|
520.0
520.0
|
PSU Comparison and Detail Specifications Table
| Specification |
No image available |
Perf Chart | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Price |
$175
0.0%
|
$150
↓
-25.0%
|
$179❗
↓
-6.8%
|
$88❗
0.0%
|
$345
0.0%
|
$122❗
↓
-14.0%
|
$140
0.0%
|
$170
0.0%
|
$520
↓
-5.5%
|
| Price per kW | 145.8 USD/kW | 125.0 USD/kW | 149.2 USD/kW | 103.1 USD/kW | 406.0 USD/kW | 116.2 USD/kW | 139.9 USD/kW | 169.9 USD/kW | 520.0 USD/kW |
| Manufacturer | LIAN LI | Thermaltake | THERMALTAKE | Sea Sonic Electronics Co., Ltd. | SEASONIC | Thermaltake | be quiet! | be quiet! | be quiet! |
| Wattage | 1200 W | 1200 W | 1200 W | 850 W | 850 W | 1050 W | 1000 W | 1000 W | 1000 W |
| Ver. / FF | 3.1 / ATX | 3.0 / ATX | 3.0 / ATX | 3.0 / ATX | 3.0 / ATX | 3.0 / ATX | 3.1 / ATX | 3.1 / ATX | 3.1 / ATX |
| Efficiency | Gold (91%) | Gold (90%) | Gold (90%) | Platinum (92%) | Gold (90%) | Platinum (92%) | Gold (94%) | Platinum (94%) | Platinum (93%) |
| 12V Rails | 1 / 100 A | 1 / 100 A | 1 / 100 A | 1 / 70 A | 1 / 70 A | 1 / 87 A | 1 / 83 A | 1 / 83 A | 1 / 83 A |
| 12V/5V/3.3V | 100 A / 20 A / 20 A | 100 A / 20 A / 20 A | 100 A / 22 A / 22 A | 70 A / 20 A / 20 A | 70 A / 20 A / 20 A | 87 A / 20 A / 20 A | 83 A / 22 A / 22 A | 83 A / 20 A / 20 A | 83 A / 25 A / 25 A |
| Fan Size | 120 mm | 120 mm | 135 mm | 135 mm | 135 mm | 120 mm | 120 mm | 140 mm | 135 mm |
| Modular | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| Fan Stop | ❌ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ❌ |
| Fanless | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Dimensions | (D)182 mm X (W)86 mm X (H)150 mm | 150mm(W)x86mm(H)x140mm(D) | 150mm(W) x 86mm(H) x 160mm(D) | 160 × 150 × 86 mm | 160 × 150 × 86 mm | 140mm(W)x86mm(H)x150mm(D) | 160 x 150 x 86 | 160 x 150 x 86 | 160 x 150 x 86 mm |
| Warranty | 10 years | 10 years | 10 years | 12 years | 12 years | 10 years | 10 years | 10 years | 10 years |
Power Supply Specification Table
| Power_Supply (Desc) | Wattage (Desc) | ATX Ver / FF / Modular | Efficiency | 12V Rails / Amp | Output 12V/5V/3.3V | Warranty |
|---|---|---|---|---|---|---|
| 1200 W | 3.1 / ATX / True | Gold, 91% | 1 / 100.00 A | 100 A / 20 A / 20 A | 10 years | |
| 1200 W | 3.0 / ATX / True | Gold, 90% | 1 / 100.00 A | 100 A / 20 A / 20 A | 10 years | |
| 1200 W | 3.0 / ATX / True | Gold, 90% | 1 / 100.00 A | 100 A / 22 A / 22 A | 10 years | |
| 850 W | 3.0 / ATX / True | Platinum, 92% | 1 / 70.00 A | 70 A / 20 A / 20 A | 12 years | |
| 850 W | 3.0 / ATX / True | Gold, 90% | 1 / 70.00 A | 70 A / 20 A / 20 A | 12 years | |
| 1050 W | 3.0 / ATX / True | Platinum, 92% | 1 / 87.00 A | 87 A / 20 A / 20 A | 10 years | |
| 1000 W | 3.1 / ATX / True | Gold, 94% | 1 / 83.40 A | 83 A / 22 A / 22 A | 10 years | |
| 1000 W | 3.1 / ATX / True | Platinum, 94% | 1 / 83.00 A | 83 A / 20 A / 20 A | 10 years | |
| 1000 W | 3.1 / ATX / True | Platinum, 93% | 1 / 83.30 A | 83 A / 25 A / 25 A | 10 years |
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