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TSR69
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Location: Republic of the Seven United Provinces
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 Posted: Tue, 9th Mar 2010 16:27 Post subject: |
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This is a question I've been asking for ages and never really found a conclusive answer or benchmark showing it. Currently running my PCI-E 2.0 4870 on a P35 chipset board (Asus P5K-Pro) which only has PCI-E 1.0/1.1.
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| Posted: Tue, 9th Mar 2010 16:28 Post subject: |
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found this by goggling
| Quote: | PCI-E 2.0 cards are backwards compatible with PCI-E 1.x. Yes it cuts throughput by half but, its still worth having a PCI-E 2.0 even without a 2.0 slot.
Here are the speeds for each revision of PCI-E
* v1.x: 4 GB/s
* v2.0: 8 GB/s
* v3.0: 16 GB/s |
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LeoNatan
☢ NFOHump Despot ☢
Posts: 73196
Location: Ramat Gan, Israel 🇮🇱
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| Posted: Tue, 9th Mar 2010 16:30 Post subject: |
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I hardly think the 5770 would be able to stress the PCIe 2.0 boundaries, so yeah, no worries, it will be faster than what you have now at an affordable price. 
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TSR69
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Location: Republic of the Seven United Provinces
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| Posted: Tue, 9th Mar 2010 18:46 Post subject: |
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| sabin1981 wrote: | | This is a question I've been asking for ages and never really found a conclusive answer or benchmark showing it. Currently running my PCI-E 2.0 4870 on a P35 chipset board (Asus P5K-Pro) which only has PCI-E 1.0/1.1. |
this article is interesting:
http://www.techpowerup.com/reviews/AMD/HD_5870_PCI-Express_Scaling/1.html
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| Posted: Tue, 9th Mar 2010 18:56 Post subject: |
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So in other words, PCI-E 1.1/16x is the equivalent of 8x for PCI-E 2.0 ..? Cool, then I'm happy as there's barely any difference whatsoever at my resolutions (1280 and 1680)
Suits me just fine ^_^ Thanks for that article!
| Quote: |
PCI-Express 2.0 x8 performance, which is perhaps the most crucial set of figures in this review, holds relevance to most people looking to pair two of these cards on mid-range motherboards or one of these cards on an x16 1.x motherboard.
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Perfect. That's all I care about =)
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| Posted: Tue, 9th Mar 2010 19:25 Post subject: |
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After seeing this:
My faith in 5770 has been restored ^^
"Quantum mechanics is actually, contrary to it's reputation, unbeliveably simple, once you take the physics out."
Scott Aaronson | chiv wrote: | | thats true you know. newton didnt discover gravity. the apple told him about it, and then he killed it. the core was never found. |

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| Posted: Tue, 9th Mar 2010 19:42 Post subject: |
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The thing is though, since it's often slower than 4870, running DX11 games is going to be too taxing for the card in most cases.
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Werelds
Special Little Man
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Location: 0100111001001100
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| Posted: Tue, 9th Mar 2010 20:09 Post subject: |
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| sabin1981 wrote: | | The thing is though, since it's often slower than 4870, running DX11 games is going to be too taxing for the card in most cases. |
Depends. If you don't use Tessellation, it'll probably run faster because it's improved a lot on all the other stuff games use.
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TSR69
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Location: Republic of the Seven United Provinces
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