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Pcie 2 0 vs pcie x16

Last response: in Graphics & Displays
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July 16, 2010 2:40:33 PM

Hello,
i purchased a xfx gts 250 1gb in chennai,and i am currently using dg31pr mobo it has only one pcie-*16 slot.
gts 250 is pci2.0.

can it perform up to the mark in pcie-*16 slot,or i have to change a pcie-2.0 mobo.
please help me...........

More about : pcie pcie x16

July 16, 2010 2:43:41 PM

It will work. The card is not powerful enough to require 2.0, and they are backwards compatible.
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July 16, 2010 2:47:29 PM

it will work but some one said it wont use its full efficiency in pcie*16 slots,the frames wont be up to the mark.........
please tell any good intel pcie2.0 mobo (ddr2 two slots enough)..........
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July 16, 2010 2:55:11 PM

murdermuthu said:
it will work but some one said it wont use its full efficiency in pcie*16 slots,the frames wont be up to the mark.........
please tell any good intel pcie2.0 mobo (ddr2 two slots enough)..........

If you believe you already had an answer to the question, why did you ask?

You were told wrong. 2.0 has twice the bandwidth of 1.0. The card you mentioned is not powerful enough to run out of bandwidth on 1.0, nevermind 2.0. Buying another motherboard just for a 2.0 slot at this point is a waste of money, as it will perform the same on both.
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July 16, 2010 2:57:08 PM

Best answer selected by murdermuthu.
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July 16, 2010 3:02:48 PM

You are getting a bit confused on the specs

- PCI-e slots will run at either x1 x4 x8 or x16 (this is the number of lanes the card will use to interconnect with the MOBO and does not deal with speed - so the x16 slot will be fine and will run the card at its full capacity.

As explained by the WIKI :
Quote:
The PCIe 2.0 standard doubles the per-lane throughput from the PCIe 1.0 standard's 250 MB/s to 500 MB/s. This means a 32-lane PCI connector (x32) can support throughput up to 16 GB/s aggregate. The PCIe 2.0 standard uses a base clock speed of 5.0 GHz, while the first version operates at 2.5 GHz.

PCIe 2.0 motherboard slots are fully backward compatible with PCIe v1.x cards. PCIe 2.0 cards are also generally backward compatible with PCIe 1.x motherboards, using the available bandwidth of PCI Express 1.1. Overall, graphic cards or motherboards designed for v 2.0 will be able to work with the other being v 1.1 or v 1.0.

SO in your case the gts 250 will not fully saturate even a PCI-e 1.0 standard slot (It does not run at more than 4Gb\s throughput so will not fully use the available capacity) -so you will not notice any slow down due to using an older mobo -- The only time it will become a problem is if you have a card that can handle more than 4 GB\s throughput and then a PCI-e 2.0 spec MObo that can handle 8Gb\s throughput on a PCI-e x16 slot would help !)

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July 16, 2010 3:04:39 PM

JDFan said:
You are getting a bit confused on the specs

- PCI-e slots will run at either x1 x4 x8 or x16 (this is the number of lanes the card will use to interconnect with the MOBO and does not deal with speed - so the x16 slot will be fine and will run the card at its full capacity.

As explained by the WIKI :
Quote:
The PCIe 2.0 standard doubles the per-lane throughput from the PCIe 1.0 standard's 250 MB/s to 500 MB/s. This means a 32-lane PCI connector (x32) can support throughput up to 16 GB/s aggregate. The PCIe 2.0 standard uses a base clock speed of 5.0 GHz, while the first version operates at 2.5 GHz.

PCIe 2.0 motherboard slots are fully backward compatible with PCIe v1.x cards. PCIe 2.0 cards are also generally backward compatible with PCIe 1.x motherboards, using the available bandwidth of PCI Express 1.1. Overall, graphic cards or motherboards designed for v 2.0 will be able to work with the other being v 1.1 or v 1.0.

SO in your case the gts 250 will not fully saturate even a PCI-e 1.0 standard slot (It does not run at more than 4Gb\s throughput so will not fully use the available capacity) -so you will not notice any slow down due to using an older mobo -- The only time it will become a problem is if you have a card that can handle more than 4 GB\s throughput and then a PCI-e 2.0 spec MObo that can handle 8Gb\s throughput on a PCI-e x16 slot would help !)

+1 for a more technically thorough explanation :D 
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a c 171 Î Nvidia
July 16, 2010 3:37:30 PM

This topic has been closed by Mousemonkey
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