Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > PCI Express 4x limit the GTX 260?
Ask the community Add a reply
Word :    Username :           
 
comet_786   08-26-2008 at 02:44:26 PM

Greetings,

I was wondering if I intend to SLI with two GTX 260's - but my motherboard does only 1 x16 PCI-E and another 1 x4 PCI-E. So will the 4x lane limit the GTX 260? Can anybody show me some calculations?

PCI 4X: 1000MB/S in one direction

Add a reply
Sponsored Links
Register or log in to remove.
homerdog   08-26-2008 at 03:00:29 PM
- 1 +

Yes (it will be a bottleneck), but that aside I don't know of any SLI compatible motherboards with 4x PCIe slots. What board is it?

Reply to homerdog
lambofgode3x   08-26-2008 at 03:00:46 PM
- -1 +

what kind of motherboard is it? the only ones i know that have a 16x slot and a 4x is the crossfire motherboards with p35 chipsets.

------------------------------ Q6600 @ 3.6GHz|2GB Crucial Ballistix Tracer|DFI P965-S Dark|8800GT 512MB|Raptor Main Drive|Audigy X-Fi (Modded)|Rocketfish Case with H2O|

AMD Athlon X2 4800+ @ 2.7GHz|OCZ Golden Gamer @ 450MHz 2.5-3-2-5, 1T|250GB Main Drive|2900XT|NZXT Zero w/ h2o
 Reply to lambofgode3x
Nik_I   08-26-2008 at 03:11:31 PM
- -1 +

pci-e x4 is roughly equal to agp 8x. but are you absolutely sure it's x4 and not maybe x8? i've never heard of x16 and x4 before.

Reply to Nik_I
comet_786   08-26-2008 at 03:17:55 PM
- 0 +

Sorry you guys are correct - its 16X and 8X respectively.

A8N SLI Premium
4200+ X2 @ 2.2Ghz OC'd to 3.0Ghz
OCZ 4GB DDR 500 OC'd to DDR 540
1x BFG OC 8800 GTS 640MB
Total HD space 1TB
OCZ 1KW Elitestream PS

Message quoted 1 times
Reply to comet_786
Nik_I   08-26-2008 at 03:20:41 PM
- 0 +

comet_786 wrote :

Sorry you guys are correct - its 16X and 8X respectively.

A8N SLI Premium
4200+ X2 @ 2.2Ghz OC'd to 3.0Ghz
OCZ 4GB DDR 500 OC'd to DDR 540
1x BFG OC 8800 GTS 640MB
Total HD space 1TB
OCZ 1KW Elitestream PS



well in that case, you won't have a huge bottleneck, but i think your cpu may hold back the cards a bit.

Reply to Nik_I
lambofgode3x   08-26-2008 at 03:21:29 PM
- 0 +

edit: nevermind...

but now my question for you, are you planning to try to sli the gts 640 with the gtx 260? why not put it in the top 16x slot?


Message edited by lambofgode3x on 08-26-2008 at 03:26:30 PM
------------------------------ Q6600 @ 3.6GHz|2GB Crucial Ballistix Tracer|DFI P965-S Dark|8800GT 512MB|Raptor Main Drive|Audigy X-Fi (Modded)|Rocketfish Case with H2O|

AMD Athlon X2 4800+ @ 2.7GHz|OCZ Golden Gamer @ 450MHz 2.5-3-2-5, 1T|250GB Main Drive|2900XT|NZXT Zero w/ h2o
 Reply to lambofgode3x
comet_786   08-26-2008 at 03:38:48 PM
- 0 +

I was under the impression that in order to do SLI, the cards have to be identical?

Reply to comet_786
comet_786   08-26-2008 at 03:53:59 PM
- 0 +

The problem is that if I use 8800 GTS with the GTX 260, the 260 would be limited by the 8800GTS. So its best I get two GTX 260's... what do you guys think.

Reply to comet_786
invisik   08-26-2008 at 03:58:13 PM
- 0 +

ya it would be best to get 2 gtx260. i have that setup and im really happy with my gaming needs with those cards. finally crysis is playable @ 1680x1050 all very high and 16aa avg 30+. (might have a slight edge since both my cards running at x16) but trust me in sure ull be pleased with the configuration.
=]

------------------------------ intel core 2 quad q6600 @3.2ghz msi p6n diamond (X-FI Extreme sound) 6gig of OCZ+CoRSAIR oc 900mhz Nvidia gtx 260 sli @ 730/1465/1250
Lite-On Blue-ray Western Digital 7200rpm 500gb Antec 500 Earthwatt Window vista 64-bit
Reply to invisik
B-Unit   08-26-2008 at 04:16:22 PM
- 0 +

The cards have to be the same model (I.E. GTX260 or 8800GTS) The memory sizes can be different, and they can be from different suppliers, but the key thing is that they be the same model.

------------------------------ http://farm4.static.flickr.com/3073/2578392638_2827857d10_o.png
 Reply to B-Unit
comet_786   08-26-2008 at 04:17:08 PM
- 0 +

I am looking at the EVGA GTX 260 Superclocked for $259CAD. So if I put those two in SLI, and running at 1920x1200 res, do you think my system can hold around 24fps (no AA)?

Reply to comet_786
comet_786   08-26-2008 at 04:20:10 PM
- 0 +

To clarify above post: In Crysis at high settings (no AA and no AS)...

Reply to comet_786
invisik   08-26-2008 at 04:28:13 PM
- 0 +

yes i have the same evga superclocked it will have much higher then 24fps. 16aa takes more resource then increase the resolution i believe.
wait i just looked at ur spec it seems like the ram is going to be a bottleneck and the cpu might slightly hinder performance. but u should get around 24fps avg.

------------------------------ intel core 2 quad q6600 @3.2ghz msi p6n diamond (X-FI Extreme sound) 6gig of OCZ+CoRSAIR oc 900mhz Nvidia gtx 260 sli @ 730/1465/1250
Lite-On Blue-ray Western Digital 7200rpm 500gb Antec 500 Earthwatt Window vista 64-bit
Reply to invisik
comet_786   08-26-2008 at 07:11:16 PM
- 0 +

I am actually thinking now of not going ahead with the two gtx 260's... because my processor is really slow (I checked benchmarks and the core 2 is about 50% faster).

invisik, you are using a 500W PS with two GTX 260 SLI?

Reply to comet_786
invisik   08-26-2008 at 07:35:19 PM
- 0 +

well at 3ghz it shouldnt be much of a bottleneck.
haha yes i got my q6600 oc at 3.2ghz and 2gtx 260 in sli oc at 710/1230
on a 500w. still much more room to oc. =]
ppl exaggerate these days on psu wattage.


Message edited by invisik on 08-26-2008 at 07:35:33 PM
------------------------------ intel core 2 quad q6600 @3.2ghz msi p6n diamond (X-FI Extreme sound) 6gig of OCZ+CoRSAIR oc 900mhz Nvidia gtx 260 sli @ 730/1465/1250
Lite-On Blue-ray Western Digital 7200rpm 500gb Antec 500 Earthwatt Window vista 64-bit
Reply to invisik
Ask the community Add a reply
Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > PCI Express 4x limit the GTX 260?
Go to:

There are 598 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.337 seconds
Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
They won a badge
Join us in greeting them