Sign in with
Sign up | Sign in
Your question

3870 2D clock staying at 800mhz

Last response: in Graphics & Displays
May 30, 2008 12:02:50 AM

I thought the gpu clock of the 3870s were supposed to clock down to 300Mhz for 2d applications. Mine is staying at 800Mhz.
May 31, 2008 4:02:49 PM

oh yeah, CCC 8.5. The visiontek is the OC'd version.
June 1, 2008 4:24:47 PM

Come on guys. i know one of you can help.
Related resources
June 2, 2008 3:55:29 PM

Im not sure about your GPU but my HD2900Pro does the same thing. But thats normally after a game. When does yours do it?
June 2, 2008 5:45:39 PM

That is the thing. This Visiontek card is the OC edition. It is staying at 800Mhz for 2d apps. My last sapphire 3870 had a 300Mhz 2d clock and 700Mhz for 3d apps.

I am thinking i need to return it if the clocks arent working properly.

So, Aren't the 38xx cards supposed to run at 300mhz for 2d applications?
June 4, 2008 2:19:58 PM

I dont think the X2 can underclock itself when overclocked with the current drivers...
June 5, 2008 8:04:13 PM

By any chance, is this the best buy HD3870 $129 card?
If it is, I am having the same problem. The difference with me is that my MB sometimes shows it at x4 rather than x16, so I don't know if my MB is causing the issue with my card.
I wish someone had an answer to this problem.
June 6, 2008 6:52:38 AM

What are you using to check the clocks?
June 6, 2008 12:03:07 PM

^the CCC does it...

I miss read the post, I thought you were talking about the x2

Its probably Visionteks setup doing it...

Soundefx that sounds as if it is working as part of a quad crossfire setup
June 8, 2008 4:48:47 AM

My MB is not a crossfire board. I only have one card in it and the pci-e slot runs at x16 most of the time. But when I randomly check gpu-z it shows the card running at x4.