Need help with SFF sleeper build PSU

[HP2]

Hi!

I'm currently planning to massively upgrade a HP Compaq DC7800 with a Mini-ITX motherboard, R3 1200 CPU and a GTX 1050 Ti low profile to build a small form factor sleeper build.

 

I would loooove to use the current 240w HP PSU to save a hundred bucks and the hassle to fit a SFX PSU in here, but some connectors are not standard. Luckily, I found an adapter for the mini-ATX 24 pin connector. The only remaining problem is the CPU connector.... the one on the HP PSU is 6 pin (No, it's not for a PCI card, but for the CPU).

 

Basically, I need to convert the 6 pin CPU connector to a standard 4 pin.

 

If you think it would be possible, please help me!

Or if you think this will all blow up, fry, melt or catch fire please tell me! 

 

 

P.-S.: Here is the part list if you are curious

[Katsunaka]

Why not just buy a pcie extension thats 4 pin with the 2 pins extra. 

Then just not use the 2 extra pins.

[,,,,,,,,,,,,,,,,,,,,,,,,,,]

would not recommend this on an oem psu. bettr to spend the extra money instead of risking your parts + house.

[BlueChinchillaEatingDorito]

3 minutes ago, Katsunaka said:

Why not just buy a pcie extension thats 4 pin with the 2 pins extra. 

Then just not use the 2 extra pins.

CPU Power connectors are wired differently compared to PCI-e power connectors.

Diagram from Overclock.net (http://cdn.overclock.net/a/ac/1000x2000px-LL-ac82eb1d_pinout.png)

[BlueChinchillaEatingDorito]

Just now, Reece Leu said:

would not recommend this on an oem psu. bettr to spend the extra money instead of risking your parts + house.

The issue is with these OEM enterprise systems, particularly the SFF ones, the PSUs aren't standard size. 

[Imbellis]

25 minutes ago, BlueChinchillaEatingDorito said:

The issue is with these OEM enterprise systems, particularly the SFF ones, the PSUs aren't standard size. 

100% right - the more niche a market, the more variation. Even "standardized" TFX PSUs are consistant (more or less) in 2 dimensions, but not the third.

[Audherbagn]

I would try getting an adapter for molex to eps. It is much safer. 

[HP2]

On 10/10/2017 at 10:01 PM, Audherbagn said:

I would try getting an adapter for molex to eps. It is much safer. 

That is a very good idea, thanks! I found one that uses two SATA on eBay. Here is the link

[HP2]

On 10/10/2017 at 9:22 PM, BlueChinchillaEatingDorito said:

The issue is with these OEM enterprise systems, particularly the SFF ones, the PSUs aren't standard size. 

Exactly. This PSU as a peculiar L shape to leave more room to the motherboard, plus it has hinges riveted to the case. I'm sure a standard SFX PSU would fit too, but it's easier and cheaper to use the OEM one.

[BlueChinchillaEatingDorito]

13 hours ago, HP2 said:

Exactly. This PSU as a peculiar L shape to leave more room to the motherboard, plus it has hinges riveted to the case. I'm sure a standard SFX PSU would fit too, but it's easier and cheaper to use the OEM one.

You have the mid tower variant right? Not the SFF one?

[HP2]

I have the SFF.

 

But I'll just get a new SFX PSU and try to fit it in here