Seasonic VERTEX GX-1200
Seasonic VERTEX GX-1200 Review & Specifications
The Seasonic VERTEX GX-1200 by Seasonic is a power supply unit that provides 1200 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:
- 100 A on the 12V rail (1 rail(s))
- 25 A on the 5V rail
- 25 A on the 3.3V rail
Power Supply Performance
The Seasonic VERTEX GX-1200 is classified as a very high power PSU, suitable for extreme gaming rigs and professional workstation setups. It is designed to support ultra high TDP CPUs and multiple high-end GPUs that demand high sustained power delivery and stability under full load.
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 $208.3 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-1200 |
| Current Price Amazon | $250 |
| Amazon Price Updated | 1 day, 1 hour ago. |
| Power Supply Available | True |
Specification
| Power Output | 1200 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 | 100 A / 25 A / 25 A |
| Maximum Efficiency | 90% |
| Price per kW | 208.3 USD/kW |
Seasonic VERTEX GX-1200 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) |
|---|---|---|---|---|
|
$350
|
0.0%
|
91.1%
|
26.0%
|
233.3
233.3
|
|
|
$330
|
↓
-2.9%
|
91.1%
|
27.6%
|
220.0
220.0
|
|
|
$278
|
↓
-20.3%
|
91.1%
|
32.8%
|
185.3
185.3
|
|
|
$310
|
↓
-3.1%
|
90.2%
|
29.1%
|
258.4
258.4
|
|
|
$250
|
0.0%
|
89.5%
|
35.8%
|
208.3
208.3
|
|
|
$178
|
↓
-40.6%
|
87.0%
|
49.0%
|
136.6
136.6
|
|
|
$216
|
↓
-0.5%
|
87.0%
|
40.3%
|
160.0
160.0
|
|
|
$350
|
0.0%
|
86.7%
|
24.8%
|
269.2
269.2
|
|
|
$200
|
↓
-2.7%
|
86.2%
|
43.1%
|
200.0
200.0
|
PSU Comparison and Detail Specifications Table
| Specification | Perf Chart | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Price |
$350
0.0%
|
$330
↓
-2.9%
|
$278❗
↓
-20.3%
|
$310
↓
-3.1%
|
$250
0.0%
|
$178❗
↓
-40.6%
|
$216
↓
-0.5%
|
$350
0.0%
|
$200
↓
-2.7%
|
| Price per kW | 233.3 USD/kW | 220.0 USD/kW | 185.3 USD/kW | 258.4 USD/kW | 208.3 USD/kW | 136.6 USD/kW | 160.0 USD/kW | 269.2 USD/kW | 200.0 USD/kW |
| Manufacturer | Corsair | NZXT | False | Seasonic | Seasonic | Lian Li | Thermaltake | MSI | Seasonic |
| Wattage | 1500 W | 1500 W | 1500 W | 1200 W | 1200 W | 1300 W | 1350 W | 1300 W | 1000 W |
| Ver. / FF | 3.0 / ATX | 3.1 / ATX | 3.1 / ATX | 3.0 / ATX | 3.0 / ATX | 3.1 / ATX | 3.0 / ATX | 3.1 / ATX | 3.0 / ATX |
| Efficiency | Platinum (93%) | Platinum (93%) | Platinum (93%) | Platinum (92%) | Gold (90%) | Platinum (93%) | Gold (90%) | Titanium (92%) | Platinum (92%) |
| 12V Rails | 1 / 125 A | 1 / 125 A | 1 / 125 A | 1 / 100 A | 1 / 100 A | 1 / 108 A | 1 / 112 A | 1 / 108 A | 1 / 83 A |
| 12V/5V/3.3V | 125 A / 25 A / 25 A | 125 A / 22 A / 22 A | 125 A / 25 A / 25 A | 100 A / 25 A / 25 A | 100 A / 25 A / 25 A | 108 A / 20 A / 20 A | 112 A / 24 A / 24 A | 108 A / 25 A / 25 A | 83 A / 25 A / 25 A |
| Fan Size | 140 mm | 140 mm | 135 mm | 135 mm | 135 mm | 120 mm | 135 mm | 120 mm | 135 mm |
| Modular | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ | ✔️ |
| Fan Stop | ✔️ | ✔️ | ❌ | ✔️ | ✔️ | ❌ | ✔️ | ❌ | ✔️ |
| Fanless | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Dimensions | 200mm(L) x 150mm(W) x 86mm(H) | 140 x 140 x 25 mm | 180 x 150 x 86 mm | 160 × 150 × 86 mm | 160 × 150 × 86 mm | (D)182 mm x (W)86 mm x (H)150 mm | 150mm(W) x 86mm(H) x 160mm(D) | 160 x 150 x 86 mm | 160 × 150 × 86 mm |
| Warranty | 10 years | 10 years | 10 years | 12 years | 12 years | 10 years | 10 years | 10 years | 12 years |
Power Supply Specification Table
| Power_Supply (Desc) | Wattage (Desc) | ATX Ver / FF / Modular | Efficiency | 12V Rails / Amp | Output 12V/5V/3.3V | Warranty |
|---|---|---|---|---|---|---|
| 1500 W | 3.0 / ATX / True | Platinum, 93% | 1 / 125.00 A | 125 A / 25 A / 25 A | 10 years | |
| 1500 W | 3.1 / ATX / True | Platinum, 93% | 1 / 125.00 A | 125 A / 22 A / 22 A | 10 years | |
| 1500 W | 3.1 / ATX / True | Platinum, 93% | 1 / 125.00 A | 125 A / 25 A / 25 A | 10 years | |
| 1200 W | 3.0 / ATX / True | Platinum, 92% | 1 / 100.00 A | 100 A / 25 A / 25 A | 12 years | |
| 1200 W | 3.0 / ATX / True | Gold, 90% | 1 / 100.00 A | 100 A / 25 A / 25 A | 12 years | |
| 1300 W | 3.1 / ATX / True | Platinum, 93% | 1 / 108.00 A | 108 A / 20 A / 20 A | 10 years | |
| 1350 W | 3.0 / ATX / True | Gold, 90% | 1 / 112.00 A | 112 A / 24 A / 24 A | 10 years | |
| 1300 W | 3.1 / ATX / True | Titanium, 92% | 1 / 108.33 A | 108 A / 25 A / 25 A | 10 years | |
| 1000 W | 3.0 / ATX / True | Platinum, 92% | 1 / 83.00 A | 83 A / 25 A / 25 A | 12 years |
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