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Motherboard help

CoolName80
By CoolName80
in CPUs, Motherboards, and Memory
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Can I use a 6 pin pcie extension cable to power the motherboard. The power connector is on the top left I think its supposed to power the cpu or something.

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Absolutely not. You MUST use the 24 Pin ATX connector to power the motherboard, the power connector on the top left is purely for CPU power.

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If you're referring to the 8-pin EPS12V connector located above and to the left of the CPU socket, then that's a hard no. The pins are actually squared off in a different pattern on a 6+2 PCIe connector to prevent you from doing exactly that. Why can't you use it? Well, although both connectors are 12V, their ground and +12V pins are in pretty much the opposite positions from each other. It won't work.

Main PC:

AMD Ryzen 7 5800X • Noctua NH-D15 • MSI MAG B550 Tomahawk • 2x8GB G.skill Trident Z Neo 3600MHz CL16 • MSI VENTUS 3X GeForce RTX 3070 OC • Samsung 970 Evo 1TB • Samsung 860 Evo 1TB • Cosair iCUE 465X RGB • Corsair RMx 750W (White)

 

Peripherals/Other:

ASUS VG27AQ • G PRO K/DA • G502 Hero K/DA • G733 K/DA • G840 K/DA • Oculus Quest 2 • Nintendo Switch (Rev. 2)

 

Laptop (Dell XPS 13):

Intel Core i7-1195G7 • Intel Iris Xe Graphics • 16GB LPDDR4x 4267MHz • 512GB M.2 PCIe NVMe SSD • 13.4" OLED 3.5K InfinityEdge Display (3456x2160, 400nit, touch). 

 

Got any questions about my system or peripherals? Feel free to tag me (@bellabichon) and I'll be happy to give you my two cents. 

 

PSA: Posting a PCPartPicker list with no explanation isn't helpful for first-time builders :)

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2 minutes ago, Naxa4500 said:

Absolutely not. You MUST use the 24 Pin ATX connector to power the motherboard, the power connector on the top left is purely for CPU power.

I don't think that's what he's asking (there's no way to plug an 8-pin connector into a 24-pin socket). He's asking if you can substitute a 6+2 PCIe connector for the 8-pin CPU power connector (you can't, obviously).

Main PC:

AMD Ryzen 7 5800X • Noctua NH-D15 • MSI MAG B550 Tomahawk • 2x8GB G.skill Trident Z Neo 3600MHz CL16 • MSI VENTUS 3X GeForce RTX 3070 OC • Samsung 970 Evo 1TB • Samsung 860 Evo 1TB • Cosair iCUE 465X RGB • Corsair RMx 750W (White)

 

Peripherals/Other:

ASUS VG27AQ • G PRO K/DA • G502 Hero K/DA • G733 K/DA • G840 K/DA • Oculus Quest 2 • Nintendo Switch (Rev. 2)

 

Laptop (Dell XPS 13):

Intel Core i7-1195G7 • Intel Iris Xe Graphics • 16GB LPDDR4x 4267MHz • 512GB M.2 PCIe NVMe SSD • 13.4" OLED 3.5K InfinityEdge Display (3456x2160, 400nit, touch). 

 

Got any questions about my system or peripherals? Feel free to tag me (@bellabichon) and I'll be happy to give you my two cents. 

 

PSA: Posting a PCPartPicker list with no explanation isn't helpful for first-time builders :)

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4 minutes ago, bellabichon said:

I don't think that's what he's asking (there's no way to plug an 8-pin connector into a 24-pin socket). He's asking if you can substitute a 6+2 PCIe connector for the 8-pin CPU power connector (you can't, obviously).

9 minutes ago, Electronics Wizardy said:

The 6 pin is gor gpus only, there is a seprate 4 and 8 pin for cpus.

 

9 minutes ago, Naxa4500 said:

Absolutely not. You MUST use the 24 Pin ATX connector to power the motherboard, the power connector on the top left is purely for CPU power.

Sorry my motherboard (x570 Tomahawk) has a 1x8 and a 1x4 and I only have a the 1x8 cable and I noticed I had the two 6 pin pcie cable and was wondering if it would work? Would it still work with just the 1x8 plugged in? I am planning on overclocking so I am not sure if not having the 1x4 connected would be an issue?

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1 minute ago, CoolName80 said:

 

Sorry my motherboard (x570 Tomahawk) has a 1x8 and a 1x4 and I only have a the 1x8 cable and I noticed I had the 6 pin pcie cable and was wondering if it would work? Would it still work with just the 1x8 plugged in? I am planning on overclocking so I am not sure if not having the 1x4 connected would be an issue?

Just use the 8 pin, the extra 4 pin isn't needed unless your doing extreme overclocking.

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Just now, Electronics Wizardy said:

Just use the 8 pin, the extra 4 pin isn't needed unless your doing extreme overclocking.

I am gonna overclock cpu, gpu, and ram would it still work fine?

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18 minutes ago, CoolName80 said:

I am gonna overclock cpu, gpu, and ram would it still work fine?

Yea it will be fine, the 8 pin is rated for like 300w, which is plenty for any rzyen chip on air or water cooling.

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Yeah, you're gonna be fine.

If you have to ask these questions, it's obvious you're not gonna do "extreme" overclocking. Think using ice or liquid nitrogen to bring temperatures below 0, modifying bios settings and stuff on the motherboard to increase voltages above safe levels and so on.

 

The 8 pin is enough for all current processors, including whatever overclocking an amateur does.

 

The GPU and ram are powered from different cables, so using just the 8 pin connector for CPU doesn't affect them.

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17 minutes ago, Electronics Wizardy said:

Yea it will be fine, the 8 pin is rated for like 300w, which is plenty for any rzyen chip on air or water cooling.

 

17 minutes ago, mariushm said:

Yeah, you're gonna be fine.

If you have to ask these questions, it's obvious you're not gonna do "extreme" overclocking. Think using ice or liquid nitrogen to bring temperatures below 0, modifying bios settings and stuff on the motherboard to increase voltages above safe levels and so on.

 

The 8 pin is enough for all current processors, including whatever overclocking an amateur does.

 

The GPU and ram are powered from different cables, so using just the 8 pin connector for CPU doesn't affect them.

Alright, thank you guys for helping me and clarifying everything appreciate it.

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2 hours ago, CoolName80 said:

I am gonna overclock cpu

The single 8 pin eps can easily provide 384w of power which is more than enough for any current am4 cpu, the extra one is used for ln2 and heavy overclocking which you won be able to do with ambient cooling anyways. 

 

2 hours ago, CoolName80 said:

and I noticed I had the two 6 pin pcie cable and was wondering if it would work?

No it wont, they have different pin layout. 

PC: Motherboard: ASUS B550M TUF-Plus, CPU: Ryzen 3 3100, CPU Cooler: Arctic Freezer 34, GPU: GIGABYTE WindForce GTX1650S, RAM: HyperX Fury RGB 2x8GB 3200 CL16, Case, CoolerMaster MB311L ARGB, Boot Drive: 250GB MX500, Game Drive: WD Blue 1TB 7200RPM HDD.

 

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