Single Visiontek HD4850 stuck on x8 width?

L

LordTacodip

Gawd
Joined
Sep 22, 2008
Messages
939
My specs:
ASUS M3A79-T Deluxe
Visiontek HD 4850
AMD Phenom 9950 w/ Tuniq Tower
2x 1GB DDR2 1066 G.Skill RAM
Sound Blaster Model Number: SB0570
Running Windows Vista Ultimate 32-Bit

A little more information:
I was running some benchmarks and compared them to my friend; to make a long story short, we were NOT getting the same scores, his were higher. Which is weird because my build should be superior than his =.=

I did some investigation and this is what I found out:
CCC, CPU-Z, and GPU-Z all state that I'm running my SINGLE HD4850 at x8 bandwidth.
Me = OMGWTF!

I've scored Google and all I get are problems with crossfire'd 4850's, not a single one.

Here's a screenshot:
Untitled1.jpg


I have everything at default settings; no overclock on card or CPU.

I really hope someone can help me out here, I've been working on this with no avail for a couple of hours now and I can't figure out what's the problem. :(

-Edit. Damnit. You can barely make out what it's saying in the screenshot. Let me see if I can fix that.
-Edit. There you go, I made it clearer.
 
I remember reading that some slots on multi card motherboard are 8x speed and lower. You could have put it in the wrong slot.
Also consider looking in the bios for settings dealing with the PCIE buss, maybe you set it by accident to a lower speed.
Last thing you could consider is doing nothing. PCIE 8x 2.0 is as fast as 16X slot for 1.0. So you shouldnt be losing any* performance.

*=You could lose some performance but very little.:p
 
sc3252 said:
I remember reading that some slots on multi card motherboard are 8x speed and lower. You could have put it in the wrong slot.
Also consider looking in the bios for settings dealing with the PCIE buss, maybe you set it by accident to a lower speed.
Last thing you could consider is doing nothing. PCIE 8x 2.0 is as fast as 16X slot for 1.0. So you shouldnt be losing any* performance.

*=You could lose some performance but very little.:p
Click to expand...

I've looked at the M3A79-T manual pretty thoroughly I think, and correct me if I'm wrong, but it doesn't state what slot has what band width tied to it; so I'm assuming everything is equal. All it says is "4 x PCIe 2.0 x16 slots with ATI CrossFireX™ support (dual @ x16, triple @ x16 / x8 / x8, or quad @ x8 modes)"

So regardless, it should still be operating at x16 at any slot if it's single T.T

And I know it can't be anything in the BIOS because I've reset my motherboard BIOS to factory settings/default.

If I honestly can't fix it, I might as well keep it at x8. But knowing that I'm not getting full performance for a card I've spent money on really bugs me =/
 
But a 4850 shouldn't be anywhere near maxing out a PCI-E 2.0 8x slot...
 
Yeah, I don't think it will make a noticeable difference in performance if any at all.
But, when a company says they have X number of pciex16 slots, they mean "full length" pcie slots.
Very few boards actually have all x16 slots with 16 lanes.

You more than likely don't have your card in one of the 16 lane x16 slots.

kinda confusing isn't it?
 
This happened to me with my GTX 280 when a SATA cable was pushing on the card from below, making it run at 1x speed. You might want to check that nothing is physically obstructing the slot.
 
rhansen5_99 said:
http://c1.neweggimages.com/NeweggImage/productimage/13-131-339-04.jpg
Just for giggles which slot do you have the card hooked into?
Click to expand...

I have it in the second PCIE x16 slot since the person before me who had this case broke the head of a screw in the first PCI expansion slot of the case, which would make me not be able to screw in the 4850; and I heard that the vibration of the fan could damage the board when ramped all the way up if not screwed in giving it support. So in the end I decided to use the second slot.

I just re-read that explanation. Man. That sounded confusing <.<
 
You must log in or register to reply here.
Back
Top