Cable Matters, with headquarters in Southborough, Massachusetts, offers a complete line of cables, adapters, docking stations, and networking products for the home, office, and data center. Cable Matters offers first-class, quality, and affordable products backed by an exceptional customer experience.
SATA/Mini SAS Cable & Adapter
The Reliable Connectivity
Compatible PSUs (#Not a Complete List)
What type of connection does this cable support?
This male-to-male cable connects a PSU 8-pin (EPS/ATX) connector to a GPU PCIe 6/8-pin port. It is designed specifically for powering GPUs, not CPUs.
How do I verify my PSU’s compatibility?
Confirm the connector shape matches and verify the PSU pinout (Pins 1-4 = 12 V, Pins 5-8 = Ground). It's not compatible with EVGA PSUs. When unsure, check your PSU’s documentation or contact the manufacturer.
Why doesn’t it power my GPU even though it fits?
Some PSUs have different pinouts, so a physical fit does not ensure electrical compatibility. Always verify the pinout before purchase.
What should I do if it doesn’t work?
1)Ensure using the correct ports (EPS/PCIe labeled).
2)Verify the cable is fully seated.
3)Confirm the PSU pinout matches the cable.
4)Test with a known-good cable to rule out device faults.
5)If issues persist, contact Cable Matters support.
Why is one pin on the PSU connector missing or unwired?
That’s intentional. The unused pin on the PSU side is part of the correct design for safe and stable power delivery. It does not affect performance or compatibility with supported power supplies.
Comparison Chart
 8 Pin GPU Power Cable |  PCIe Extension Cable |  EPS CPU Extension Cable |  6-Pin to 8-Pin PCIe Cable |  6 Pin PCIe Cable | |
|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — |
Price | — | — | — | — | — |
Connectors | 8 Pin EPS to 6+2 Pin PCIe | 8 pin PCIe Male to Female | 8 pin EPS Male to Female | 8 Pin to Dual (6+2) Pin PCIe | PCIe to PCIe |
Available Lengths | 2 Feet | 10 inches | 10 inches | 4 Inches | 10 Inches |
Color | Black | Black | Black | Black | Black |
Multipack Sizes | 1-Pack | 2-Pack | 2-Pack | 2-Pack | 2-Pack |
Model Numbers | 104078 | 104079 | 104080 | 104042 | 104037 |
Compatible PSUs (#Not a Complete List)
| Corsair PSU | CX-M Series: CX450M / CX550M / CX650M / CX750M / CX850M |
|---|---|
| Corsair PSU | RMx Series: RM550x / RM650x / RM750x / RM1000x [Note: Not work with CORSAIR RM850X Shift] |
| Corsair PSU | RM Series: RM550 / RM650 / RM750 / RM850 / RM1000 |
| Corsair PSU | HXi Series: HX750i / HX850i / HX1000i / HX1200i / HX1500i |
| Corsair PSU | HX Series: HX750 / HX850 / HX1000 / HX1200 |
| Corsair PSU | Axi Series: AX760i / AX860i / AX1200i / AX1500i / AX1600i |
| Corsair PSU | AX Series: AX860 / AX1000 [NOTE: Not compatible with AX750, AX850, AX1200 (Gold), or any AX Series Gold-rated power supplies.] |
| Corsair PSU | SF Series: SF450 / SF600 / SF750 |
| Corsair PSU | TX-M Series: TX550M / TX650M / TX850M |
| Corsair PSU | RMe Series: RM750e / RM850e / RM1000e |
| Thermaltake PSU | Toughpower GF1: 650W / 750W / 850W / 1000W / 1200W |
| Thermaltake PSU | Toughpower Grand RGB: 850W / 1050W / 1200W |
| Thermaltake PSU | Toughpower PF1 ARGB: 850W / 1050W / 1200W |
| CoolerMaster PSU | MWE Gold V1 550W / 650W / 750W [Note: Not compatible with other models with different pinouts.] |
| NZXT PSU | C650 / C750 / C850 / C1000 |
| Important Note | Not compatible with EVGA PSUs. Always check pinout to avoid power failure or system damage. |
What type of connection does this cable support?
This male-to-male cable connects a PSU 8-pin (EPS/ATX) connector to a GPU PCIe 6/8-pin port. It is designed specifically for powering GPUs, not CPUs.
How do I verify my PSU’s compatibility?
Confirm the connector shape matches and verify the PSU pinout (Pins 1-4 = 12 V, Pins 5-8 = Ground). It's not compatible with EVGA PSUs. When unsure, check your PSU’s documentation or contact the manufacturer.
Why doesn’t it power my GPU even though it fits?
Some PSUs have different pinouts, so a physical fit does not ensure electrical compatibility. Always verify the pinout before purchase.
What should I do if it doesn’t work?
1)Ensure using the correct ports (EPS/PCIe labeled).
2)Verify the cable is fully seated.
3)Confirm the PSU pinout matches the cable.
4)Test with a known-good cable to rule out device faults.
5)If issues persist, contact Cable Matters support.
Why is one pin on the PSU connector missing or unwired?
That’s intentional. The unused pin on the PSU side is part of the correct design for safe and stable power delivery. It does not affect performance or compatibility with supported power supplies.
Comparison Chart
8 Pin GPU Power Cable | PCIe Extension Cable | EPS CPU Extension Cable | 6-Pin to 8-Pin PCIe Cable | 6 Pin PCIe Cable |
|---|---|---|---|---|
| Customer Reviews | ||||
| — | — | — | — | — |
| Price | ||||
| — | — | — | — | — |
| Connectors | ||||
| 8 Pin EPS to 6+2 Pin PCIe | 8 pin PCIe Male to Female | 8 pin EPS Male to Female | 8 Pin to Dual (6+2) Pin PCIe | PCIe to PCIe |
| Available Lengths | ||||
| 2 Feet | 10 inches | 10 inches | 4 Inches | 10 Inches |
| Color | ||||
| Black | Black | Black | Black | Black |
| Multipack Sizes | ||||
| 1-Pack | 2-Pack | 2-Pack | 2-Pack | 2-Pack |
| Model Numbers | ||||
| 104078 | 104079 | 104080 | 104042 | 104037 |
Cable Matters, with headquarters in Southborough, Massachusetts, offers a complete line of cables, adapters, docking stations, and networking products for the home, office, and data center. Cable Matters offers first-class, quality, and affordable products backed by an exceptional customer experience.
SATA/Mini SAS Cable & Adapter
The Reliable Connectivity