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Some time ago I bought an ATi Radeon HD7950 3GB 384-Bit for my quite old system. I did have a huge performance gain moving from HD6870 to HD7950, but I'm not sure how far the board interface may be bottlenecking my card. My mobo has 2 PCI-Ex x16 v1.1 slots, what means that each slot operates @ 4GB/s.
I found an article telling that the performance loss using one PCI-Ex 3.0 high-end single GPU card in a PCI-Ex x8 v2.0 (4GB/s) interface is very small for most games; so I guess it's the same for a PCI-Ex v1.1 x16.
Source: AnandTech - The Radeon HD 7970 Reprise: PCIe Bandwidth, Overclocking, & The State Of Anti-Aliasing
What are your thoughts? Am I burning money?
I found an article telling that the performance loss using one PCI-Ex 3.0 high-end single GPU card in a PCI-Ex x8 v2.0 (4GB/s) interface is very small for most games; so I guess it's the same for a PCI-Ex v1.1 x16.
Moving from PCIe 2 x16 (8GB/sec) to PCIe 2 x8 (4GB/sec) incur a generally very small penalty on the 7970. However like most tests this is entirely dependent on the game itself. With games like Metro 2033 the difference is non-existent, while Battlefield 3 and Crysis only lose 2-3%, and DiRT3 suffers the most, losing 14% of its performance. DiRT3’s minimum framerates look even worse, dropping by 19%. As DiRT3 is one of our higher performing games in the first place the real world difference is not going to be that great – it’s still well above 60fps at all times – but it’s clear that in the wrong situation only having 4GB/sec of PCIe bandwidth can bottleneck a 7970.
Source: AnandTech - The Radeon HD 7970 Reprise: PCIe Bandwidth, Overclocking, & The State Of Anti-Aliasing
What are your thoughts? Am I burning money?
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My Computer
System One
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- OS
- Windows 10.0.10122
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