GPU pcie 3.0 on motherboard pcie 2.0?

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Rockyu10

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Dec 2, 2016
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Hello community here's my question:

My current cpu is a AMD Phenom II 955 Black Edition and my motherboard is a ASUS M5A87 witch has a PCIe 2.0 bus. My current GPU died and it was powered by a 6-pin connector from my PSU XFX 550W Pro Core Edition.

And now looking for a new graphics card replacement, i came across the new GTX 1050 ti cards, but the problem is, they dont require 6-pin power connector. So if they are only powered by the motherboard, and they are PCIe 3.0, could my motherboard not support it (since it has a PCIe 2.0)?
Could the new graphics card damage my motherboard by taking power from it?

Or would it be better for the new graphics card to have a 6-pin power connector to take the power directly from the PSU?

Thanks in advance.
 
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ledhead11


Ultimately it depends on resolution for you. At 720p or something similar the 2gb should do it no problem. At 1080p w/ ultra on those games you're getting close to the ceiling w/ 2gb but it should do o.k.. Problem is that at that point your running out of options for future games. Your games and others might use the 4gb but only at 1080p and even then it really depends.

I'm no expert on AMD/ATI. Cutting...
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Rockyu10

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Dec 2, 2016
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But could my motherboard fully support a 100%load graphics card? Or should i go with the 1050's 2gb, since those have the power connector.

Thanks for the reply.
 
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ledhead11

ledhead11

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I agree with RobCrezz, in theory it should work. Years back I put a factory OC'd GT640(PCIe3.0, also bus powered) into my old core2quad q9300 system. It worked but the card would occasionally crash. Maybe drivers, maybe power. It wasn't long after that I built a new system.

If you are going that route I would recommend one with a power connector just in case. Supposedly all PCIe's are capable of up to 75watts on the bus. https://en.wikipedia.org/wiki/PCI_Express#Power

The catch here is 1050ti specs show a TDP 75w and that might be a little too close for comfort under load. http://www.pcworld.com/article/3134528/components-graphics/nvidia-geforce-gtx-1050-and-gtx-1050-ti-review-the-new-budget-gaming-champions.html

It's probably doable but your really getting close to the edge.
 
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Rockyu10

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Dec 2, 2016
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So, since none of the 1050's TI that i can afford work for me, should i go with the 1050's 2gb, or with the Sapphire RX 460 4gb. I don't know if the 4gb is worth it... I play games like Rust, 7days to die, and other fps titles.

Thanks for the reply.
 
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Rockyu10

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Dec 2, 2016
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Here's my setup:
CPU AMD 955 BE
Motherboard ASUS M5A87
PSU XFX 550W Pro Core Edition
RAM 8gb

Should i go for the MSI GTX 1050 2gb GAMING X (150€) or, should i make the effort for the MSI GTX 1050 ti GAMING X (185€).
Would my current setup even use the 4gb, for games like Rust, 7 days to die, CS GO, etc...
Thanks in advance.
 
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ledhead11

ledhead11

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Oct 10, 2014
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Ultimately it depends on resolution for you. At 720p or something similar the 2gb should do it no problem. At 1080p w/ ultra on those games you're getting close to the ceiling w/ 2gb but it should do o.k.. Problem is that at that point your running out of options for future games. Your games and others might use the 4gb but only at 1080p and even then it really depends.

I'm no expert on AMD/ATI. Cutting edge pc gaming can be tough as is and I moved away from AMD after it broke more games than it fixed for me. I know a lot of blame can be put on dev's but that's another story. . . .

Moving on. The Saphire 460 is going to push your PSU really close or just past a comfortable level. The general rule of thumb is to have the PSU providing double what the whole system is actually using. The reason being that at 1/2 usage the PSU is in its optimal power conversion and should last longer while providing best cost usages. That being said the 460 is probably your best choice to finish the life of this system(barring any cool new GPU's that come out in the next 12-18 months). Just be aware that even though it might be a good match your PSU or MOBO could give just from old age depending what life they've led or how many hours they've been on.

I may be team green but I know that if you've committed enough to one side you can usually benefit from certain optimizations. I've seen a lot of people mix/match in recent years but there was a time that having the CPU/GPU types helped.

I'd also keep an eye on that CPU. If its already tapping 70-90% usage a new GPU isn't going to help you much. If its kicking butt then don't worry about. Again, though, I'm not an AMD expert.
 
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