Topic Title: 7990 on a pci-e 2.0 motherboard
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Created On: 01/06/2014 02:07 AM
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 01/06/2014 02:07 AM
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Drace85
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A few months back I bought a ATI radeon 7990 and have been using it since however I noticed the graphic card need PCI-E 3.0 and I am currently using a PCI-E 2.0 CROSFIRE enabled mother board. Would it be smart to replace the motherboard with a PCI-E 3.0 compatible one? If I should replace it, could you also state why it would be smart to replace it?

 

Current specs:
MotherBoard: Gigabyte P67A-UD7-B3 (socket 1155
CPU: Intel core i7 2600K
GPU: Gigabyte Ati Radeon 7990



Edited: 01/06/2014 at 02:13 AM by Drace85
 01/06/2014 02:45 AM
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zipsi
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If this hd7990 is for gaming only, you will see no significant fps drop using pci-e 2.0 (maybe 1-2%?). Although if this is used for rendering, computing, pci-e 3.0 will offer a significant boost.



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Intel I7 3770K @ 4.5ghz, Cooler Master Hyper 212 Evo, Gigabyte Z77X-UD3H, Gigabyte HD7970 ghz edition, 4x4gb Kingston HyperX Beast 2133mhz, Seasonic Platinum 860, Samsung 840 Pro 256gb, OCZ Vertex 4 128gb, WD Black 1TB, WD Green 3TB+1.5TB, ASUS Xonar Essence ST, ASUS VE278Q, Windows 3.11
 01/06/2014 03:02 AM
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Drace85
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Originally posted by: zipsi If this hd7990 is for gaming only, you will see no significant fps drop using pci-e 2.0 (maybe 1-2%?). Although if this is used for rendering, computing, pci-e 3.0 will offer a significant boost.

Thanks thats the awnser I was looking for.
Since you stated it would only increase my preformance by 1-2% I looked at benchmarks and noticed that my 3Dmark score is quite low compared to the scores of other people:
 - My score for 3DMARK Firestrike(1.1): 6073
 - Lowest score found on 3dmark.com(same CPU type): 8835

Could the PCI-E 2.0 be the cause of this difference?



Edited: 01/06/2014 at 03:27 AM by Drace85
 01/06/2014 06:39 AM
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zipsi
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Your score seems to be about 1/2 if compared to the results of similar machines. Since HD7990 is a dual gpu, maybe one of them isn't working? Have you checked gpu activity during gaming/benchmarking with something like gpu-z?



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Intel I7 3770K @ 4.5ghz, Cooler Master Hyper 212 Evo, Gigabyte Z77X-UD3H, Gigabyte HD7970 ghz edition, 4x4gb Kingston HyperX Beast 2133mhz, Seasonic Platinum 860, Samsung 840 Pro 256gb, OCZ Vertex 4 128gb, WD Black 1TB, WD Green 3TB+1.5TB, ASUS Xonar Essence ST, ASUS VE278Q, Windows 3.11
 01/06/2014 08:34 AM
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Drace85
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Originally posted by: zipsi Your score seems to be about 1/2 if compared to the results of similar machines. Since HD7990 is a dual gpu, maybe one of them isn't working? Have you checked gpu activity during gaming/benchmarking with something like gpu-z?

 


Thanks for your awnser, it seems I am an idiot... I compared my extreme firestrike score to a normal Firestrike score haha. So my score is actualy good

 01/06/2014 09:38 AM
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black_zion
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You're being held back by that CPU, it should be running at a gigahertz faster than it is currently at.

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