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Sandy bridge can't support pci-e 3.0?

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November 25, 2011 3:33:23 PM

hello, i read from an asrock motherboard ad that sandy bridge cpus won't be able to support pci-e 3.0 and that only ivy bridge cpus will. this doesn't make sense to me, but i'm not the most knowledgeable person when it comes to this stuff. this has me a little worried because i just purchased a 2500k. can anyone able to confirm this?
a c 190 à CPUs
November 25, 2011 3:58:16 PM

Why do you think you will need PCI-e 3.0? Unless you are running one of the SSD PCI-E cards you wont need that much bandwidth so it really isnt an issue for 99.99% of people.


The reason Sandy bridge doesn't support PCI-e 3.0 is because its PCI-e controller is on the CPU and it was only built to support 2.0/2.1.
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November 25, 2011 4:49:35 PM

hunter315 said:
Why do you think you will need PCI-e 3.0? Unless you are running one of the SSD PCI-E cards you wont need that much bandwidth so it really isnt an issue for 99.99% of people.


The reason Sandy bridge doesn't support PCI-e 3.0 is because its PCI-e controller is on the CPU and it was only built to support 2.0/2.1.


the only reason i asked is because i am also planning on waiting for nvidia's new kepler gpu, but i heard the kepler would utilize pci-e 3.0 and that their full potential would be bottle necked with pci-e 2.0. this was the whole reason behind my question. i heard all of the above mentioned from this post:

http://forums.nvidia.com/index.php?showtopic=208458
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November 25, 2011 5:10:08 PM

jeffreytrex said:
the only reason i asked is because i am also planning on waiting for nvidia's new kepler gpu, but i heard the kepler would utilize pci-e 3.0 and that their full potential would be bottle necked with pci-e 2.0. this was the whole reason behind my question. i heard all of the above mentioned from this post:

http://forums.nvidia.com/index.php?showtopic=208458


Is "kepler" the codename for their 28nm 6xx series GPU? Anyway, IB should be out in March, so if Kepler is out before that, I would just use it in your present rig for a while then upgrade to IB when it comes out. Otherwise you'd have to wait..
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a c 80 à CPUs
November 25, 2011 5:28:49 PM

jeffreytrex said:
hello, i read from an asrock motherboard ad that sandy bridge cpus won't be able to support pci-e 3.0 and that only ivy bridge cpus will. this doesn't make sense to me, but i'm not the most knowledgeable person when it comes to this stuff. this has me a little worried because i just purchased a 2500k. can anyone able to confirm this?


mainstream sandy bridge (lga 1155 platform) does not support pcie 3.0.
sandy bridge-e states transfer speeds at 8 gt/s.
http://www.anandtech.com/show/5091/intel-core-i7-3960x-...
http://www.tomshardware.com/reviews/core-i7-3960x-x79-p...
you should be fine with the 2500k.
edit: used the wrong quote. sorry.
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a c 471 à CPUs
November 25, 2011 10:53:25 PM

Currently even the most powerful video does not even fully use all the available bandwidth of the PCI-e 2.0 slot. Maybe 3 years from now that will be a different story.
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November 26, 2011 5:25:24 AM

Best answer selected by jeffreytrex.
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