R9 290 not getting enough power?

[HQi88]

I am running a Sapphire Tri-X R9 290 OC which has a power draw of 275W with a ToughPower 750W GF1.

The power supply comes with two 8pin(PSU) to 8+6pin(GPU) cables but I lost one so I think currently I can only supply 225W to my GPU (75W pcie + 150W 8+6pin).

Although I have not had any instability, even when running games at 100% GPU load, would this damage any components in the long term?

 

[mtcn77]

Generally, your gpu will get hot when it cannot get enough power. This is old data from gtx 275 times. Your best bet is forcing vsync and framelimiter which are both perfectly adequate for the job. Don't work that unit too had. It is an old gem.
PS: obviously you employ the frame limiter where your medium fps lies, not top.

 

[looniam]

I am running a Sapphire Tri-X R9 290 OC which has a power draw of 275W with a ToughPower 750W GF1.

The power supply comes with two 8pin(PSU) to 8+6pin(GPU) cables but I lost one so I think currently I can only supply 225W to my GPU (75W pcie + 150W 8+6pin).

Although I have not had any instability, even when running games at 100% GPU load, would this damage any components in the long term?

you're fine. fwiw the 6 and 8 pin together is 225watts 6pin/75 and 8pin/150. it can be sketchy running two 8pin connection (150+150=300watts) on a single cable. but most decent PSUs will handle 225watts, plus the 66/75 from the pci-e slot.

 

[mtcn77]

you're fine. fwiw the 6 and 8 pin together is 225watts 6pin/75 and 8pin/150. it can be sketchy running two 8pin connection (150+150=300watts) on a single cable. but most decent PSUs will handle 225watts, plus the 66/75 from the pci-e slot.

This is not good advice. The gpu(290x oc models) consumption changes according to temperature with peaks reaching 465w if ulps is turned off according to Tom's reviews.

 

[looniam]

This is not good advice. The gpu(290x oc models) consumption changes according to temperature with peaks reaching 465w if ulps is turned off according to Tom's reviews.

i gave perfectly fine advice from previous similar experiences. have no idea where your ideas from nor care.

i am here to help the OP, not to address your silly comments.

 

[Zyll Goliat]

It will work yeah for sure but R290 can have peak- spikes that can reach 400W+....and if that happens you PC potentially can froze or maybe GPU will stop responding for a moment and GPU driver will "refresh" which basically means it will kick you out from the game or that app you using.....

 

[looniam]

It will work yeah for sure but R290x can have peak- spikes that can reach 400W+....and if that happens you PC potentially can froze or maybe GPU will stop responding for a moment and GPU driver will "refresh" which basically means it will kick you out from the game or that app you using.....

yes stability can be an issue, which is why it is recommended to use two cables or one connection for each cable to reduce ripple.

 

[Tetras]

If you want to be even more cautious than e.g. v-sync, you could lock the clocks and voltage a few steps down. If you're playing mainly older games I doubt you'd notice the difference.

 

[mtcn77]

If you want to be even more cautious than e.g. v-sync, you could lock the clocks and voltage a few steps down. If you're playing mainly older games I doubt you'd notice the difference.

Wait not it. Ulps does it for you and it is perfect for it. Just undervolt and framelimit, that is it.

 

[Ruru]

I am running a Sapphire Tri-X R9 290 OC which has a power draw of 275W with a ToughPower 750W GF1.

The power supply comes with two 8pin(PSU) to 8+6pin(GPU) cables but I lost one so I think currently I can only supply 225W to my GPU (75W pcie + 150W 8+6pin).

Although I have not had any instability, even when running games at 100% GPU load, would this damage any components in the long term?

I ran a 290 with a 430W PSU and never had any problems. I'd undervolt that card as it probably had headroom.

But get a molex->PCIe adapter and plug that other cable. Dunno does it even work without it..

edit: I should've read it better. If it works, it's fine. I'd still undervolt it.

 

[Vya Domus]

Although I have not had any instability, even when running games at 100% GPU load, would this damage any components in the long term?

No. If the card was drawing too much power from the cable it would trigger the OCP protection on the PSU and you'd know about it by now. Even then it wouldn't damage anything, it would just mean the card is drawing too much current.

But I don't really understand what is your issue, I take it that you used to have two 8+6pin cables and now just one ? That doesn't matter, your card only needs one 8+6pin cable, although it is recommend to split the power with multiple cables because of the way the PSU might be wired inside that's not actually necessary.

By the way, using an 8+6pin cable that means you have 150W (8pin) +75W (6 pin) +75W (from the motherboard) = 300W, not just 225W.

Generally, your gpu will get hot when it cannot get enough power.

That makes no sense, why would it get hot ? If a video card doesn't get enough power it will just crash the system and that'll be it.

 

[mtcn77]

That makes no sense, why would it get hot ? If a video card doesn't get enough power it will just crash the system and that'll be it.

I don't even recall where I read it from. Apparently that was some user's experience pre and post psu upgrade.

 

[HQi88]

Thank you for the replies everyone!

It seems that I should be OK with my current wiring then. I have free-sync enabled and I have limited the refresh rate of my screen and the fps of my games to 60fps

 

[mtcn77]

You are okay using gpu shaders. Enable all you want. What you shouldn't do is rely on pixel shader, a.k.a fps. Even 60fps is too much, you can raster at twice rate the gpu renders, but you cannot control the power.

 

[Shrek]

Generally, your gpu will get hot when it cannot get enough power.

How so?

 

[mtcn77]

How so?

I don't want to speculate.