Will my 220W PSU be ok to power XFX R7 250?

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yellowfez

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I've got a HP Pavilion Slimline PC so my options are pretty limited. I'm not a hardcore gamer so not looking for the best, also not looking to spend loads though might consider spending a bit more if worthwhile.

I was originally looking at a low profile 7750 but I would have to replace the PSU, and the only ones I can seem to find that are the right size are around $80 from Athena, so that plus delivery to UK would be already quite a lot on top of the GPU.

Here's the full specs for my PSU:
https://www.dropbox.com/s/6l90cg8rbv8ttmi/2014-03-22%2012.40.47.jpg

This is the card I was planning on getting:

http://www.dabs.com/products/xfx-amd-radeon-r7-250-1050mhz-1gb-gddr5-pci-e-3-0-hdmi-low-profile-91CC.html?q=xfx%20r7%20250%20low%20profile&src=16

Any thoughts would be greatly appreciated!
 
Solution
Major_Trouble
I do believe the type of PSU you are looking for is TFX. Not something I have come across before myself. You can get them in the UK but due to the small size and expected usage they are not very powerful but should do the job. The best I could find was 300w. ModernWare is recommending ATX suppies which won't fit.

http://www.scan.co.uk/products/be-quiet!-300w-tfx-power-2-80plusbronze-black-pci-e-sleeved-cables-erp2014

I found a 400w but am not sure of it's capabilities

http://www.amazon.co.uk/EZCool-Power-Supply-Small-Factor/dp/B0056G8L4K

Nvidia's GTX 750ti would be your ideal Gfx card as it only draws 60w but I have yet to find it in 'low profile' form. I would expect it out soon though. It would have 2x the performance of the 7750...
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ModernWarfare

ModernWarfare

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Jan 26, 2014
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Not recommended. if you're looking at something alot better and very cheap a CX430 will help alot.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($19.99 @ Micro Center)
Total: $19.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-22 09:13 EDT-0400)

or uk

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Corsair CX 430W 80+ Bronze Certified Semi-Modular ATX Power Supply (£36.68 @ Amazon UK)
Total: £36.68
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-22 13:14 GMT+0000)
 
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Major_Trouble

Major_Trouble

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I do believe the type of PSU you are looking for is TFX. Not something I have come across before myself. You can get them in the UK but due to the small size and expected usage they are not very powerful but should do the job. The best I could find was 300w. ModernWare is recommending ATX suppies which won't fit.

http://www.scan.co.uk/products/be-quiet!-300w-tfx-power-2-80plusbronze-black-pci-e-sleeved-cables-erp2014

I found a 400w but am not sure of it's capabilities

http://www.amazon.co.uk/EZCool-Power-Supply-Small-Factor/dp/B0056G8L4K

Nvidia's GTX 750ti would be your ideal Gfx card as it only draws 60w but I have yet to find it in 'low profile' form. I would expect it out soon though. It would have 2x the performance of the 7750 you are looking at.
 
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yellowfez

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I think youre right MT, thanks though MW.Great find on the 750 ti low profile, I did try having a quick look for one but couldn't find it. If I go for that which psu will work? Probably should have given a link to my computer's specs, only change I've made is installed a crucial 120gb ssd for the os which is running alongside the original 500gb sata, guess this might mean I need a bit more power.

http://h10025.www1.hp.com/ewfrf/wc/documentdocname=c02575094&tmp_task=prodinfoCategory&cc=uk&dlc=en&lang=en&lc=en&product=4330203#N373
 
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Major_Trouble

Major_Trouble

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Your machine is running now on a 220w PSU. I would not add the 750ti and feel comfortable even though it should only draw an additional 60w on load. The 300w beQuite gives an additional 80w which should cover that addition nicely.

The low profile 750ti has quite a thick cooler. I can't find any actual measurements but it looks like it would take up a bit more than the next slot. My concern is the clearance between your pci slot and the top of the PSU.
 
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Major_Trouble

Major_Trouble

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The test system was an Intel Core i7 3960X, 16 GB DDR3-1600, Asus P7X79 Pro, Samsung Spinpoint F1 1TB, and the 750ti and it had a system draw of 214w.

A quality 300w PSU with a dedicated PCI supply would be enough as I have suggested. Your current 220w of unknown quality PSU (built in China) would be a problem.
 
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yellowfez

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Looks like 300w will be ok then. The 300w Be Quiet with the 6 pin doesn't look likes it available yet though, so might go for the EZcool 400w of amazon. I checked the measurements and it looks like it fits. Another ones I've found is Seasonic 300w on ebay. Neither seem to have the 6 pin pci connector though. Will I need it for the 400W?

http://www.ebay.co.uk/itm/HP-Pavilion-Slimline-s5000-series-300W-upgrade-power-supply-PSU-2yr-warranty-/281097938919?pt=UK_Computing_PowerSupplies_EH&hash=item4172be27e7

Also like you said I'm not sure about the clearance either, there are some heatsinks which look very close. Could do with finding out the height of it.

https://www.dropbox.com/s/31pwby855cv6q8q/IMG_2165.JPG
 
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Major_Trouble

Major_Trouble

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ebuyer have it at a good price. I could not see if the 400w Ezcool had a 6 pin pci. You could connect up using molex > 6 pin for these low wattage GPUs but still better to have a dedicated rail to be safe.

http://www.ebuyer.com/620502-be-quiet-tfx-power-2-300w-bronze-power-supply-bn228

The space between the expansion slot and the top of the PSU look around the same as the thickness of the 750ti + cooler. I would have to get that measurement confirmed before I would commit on the 750ti. Overclockers or KFA2 might be able to provide that info.

You might have to revert back to the AMD R7 250 you initially chose as that looks like it would not be a problem fitting but you would lose some performance.

Either way you would need to upgrade the PSU.
 
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Major_Trouble

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If it fits you might be able to set up a new fan profile so it's not running at 40% (from reviews) when idling during desktop duties. Look at the noise when idle / on load. It barely changes so would not be surprised if it's true. The card runs cold when not on load and running at 40% is completely unnecessary. I game with a headset on so noisy cards are fine for me then but I hate it when browsing etc.
 
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Major_Trouble

Major_Trouble

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My pleasure. I hope you're a happy camper with your purchases.

Maybe you might drop a note in the thread to say how it went in the end and if you get the performance you were after. Helps others make the decision based on your experiences.
 
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Major_Trouble

Major_Trouble

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Your computer will have to allow some extra heat to escape when gaming from the added card. You also have a small case with probably limited air flow. I would consider leaving the 2nd expansion slot clear / open to allow for this a bit. At the very least drill some holes in the slot blanking plate.
 
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