Compatibility of DDR3 and DDR5 graphic cards.

Vincent Manalo · Jun 7, 2013

Hi guys.

I just wanna ask, I have ASUS P8B75-M LX with Intel® Core™ i3-3220 Processor, is it alright to put a DDR5 VGA on my mother board?

And can you give me some tips about compatibility of video cards on different types of boards and please specify the difference between PCIe 2.0 and PCIe 3.0 and what are their supported cards.

Thanks in advance.

cklaubur · Jun 7, 2013

Memory on the video card has no bearing on the rest of the computer. It is separate from the rest of the system. The OS and software are only aware of how much video memory exists, not the speed.

The difference between PCIe 2.0 and 3.0 is maximum bandwidth. PCIe 3.0 has a higher bandwidth than 2.0, but very rarely makes a noticeable difference in graphics cards, since most current single cards struggle to use all bandwidth on a PCIe 2.0 slot. As far as compatibility, PCIe 3.0 is backwards compatible with PCIe 2.0. A PCIe 3.0 card will run at PCIe 2.0 if inserted into a PCIe 2.0 slot, and a PCIe 3.0 slot will run at PCIe 2.0 if a PCIe 2.0 card is inserted into it.

Casey

DarkSable · Jun 7, 2013

Exactly what cklaubur said.

The VRAM has absolutely nothing to do with the rest of the system, and any PCIe 2.0 or 3.0 card will work in either slot. The only thing to think about is that some of the very high end cards (A titan or 690, say) might get bottlenecked slightly by a PCIe 2.0 setup. However, that only really matters if you're using SLI, where each card only gets 8 lanes rather than 16.

Vincent Manalo · Jun 8, 2013

cklaubur :

so you mean, i can insert any type of video card in every MOBO? is there any instances that my video card will throttle down cause of my low-tech MOBO? If then, how can I know the maximum video card capacity of my system unit. Thanks.

DarkSable · Jun 8, 2013

Well obviously you can't put an AGP card in a PCI slot, or a legacy PCI card in a PCI-express slot...

Currently, there IS NO GRAPHICS CARD that will be bottlenecked by a PCIe 2.0 slot.

PCIe is not exactly low-tech; it's still by far the most widely used. PCIe 3.0 is just recently becoming common.

cklaubur · Jun 8, 2013

However, PCIe 2.0 or 3.0 support (at least for Intel-based computers) depend on the processor. You can still install a PCIe 3.0 card, but if the processor only supports PCIe 2.0, it will run at PCIe 2.0 specs.
Casey

*EDIT* The Core i3-3220 does NOT support PCIe 3.0, as stated by Intel's specifications.
http://ark.intel.com/products/65693

DarkSable · Jun 9, 2013

^Yeah, but you say that as though it makes a difference.

Like I just said, there is NO graphics card in existence that will run noticeably slower on a PCIe 2.0 slot than a PCIe 3.0 slot.

manofchalk · Jun 9, 2013

^ Run noticeably slower on a PCI 2 16x or 8x slot you mean

When your down to 4x, then PCI 2 and 3 make a difference.

DarkSable · Jun 9, 2013

manofchalk :

True that.

Dark Orca · Mar 28, 2014

cklaubur :

Memory on the video card has no bearing on the rest of the computer. It is separate from the rest of the system. The OS and software are only aware of how much video memory exists, not the speed.

The difference between PCIe 2.0 and 3.0 is maximum bandwidth. PCIe 3.0 has a higher bandwidth than 2.0, but very rarely makes a noticeable difference in graphics cards, since most current single cards struggle to use all bandwidth on a PCIe 2.0 slot. As far as compatibility, PCIe 3.0 is backwards compatible with PCIe 2.0. A PCIe 3.0 card will run at PCIe 2.0 if inserted into a PCIe 2.0 slot, and a PCIe 3.0 slot will run at PCIe 2.0 if a PCIe 2.0 card is inserted into it.

Casey

Thank you ! :bounce:

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Compatibility of DDR3 and DDR5 graphic cards.

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