4870 core clock can't go over 500 MHz!!!

[tnotbdclxvi]

Basically, both Catalyst and GPU-Z are saying my core clock is 500 MHz. I have tried upping it to 750 in Catalyst 8.7 Overdrive, and it passes the test, but when I click accept, the clock goes to 750 for one second, then back to 500. What is going on?

This is on a brand new clean install of Vista Ultimate 64-bit. I did at one point try out the ASUS Smart Doctor program, and it said that my Voltage wasn't in the safe zone and that it wasn't getting reliable 12V. or something. Given that most of the ASUS utilities that came with my hardware are crap, I don't know how accurate that is, but it could be.

Any suggestions? I have:

CORSAIR CMPSU-650TX 650W ATX12V Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

ASUS Maximus II Formula Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131319

ASUS EAH4870
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121258&Tpk=asus%2b4870

Not much else connected, just Lite-On DVD Burner, Q6600 @ stock with Thermalright 120-Ultra heatsink and fan, 500GB 7,200rpm Seagate HD, 4gb RAM 800hz, 2 120mm case fans.



BTW, memory clock is fine I think. Core clock is the issue.

 

[tnotbdclxvi]

I haven't tried messing with fans yet, since I can't in Catalyst, but I don't think that would impact this anyways, as stock should be 750 regardless.

Just a note, my power supply came with two six pin power connectors, and each of those had an additional separate (and optional?) 2 pins connection that could pair up with the main six. I obviously did not use either of the additional 2 pins since the card takes 2 six pins and not 2 8 pins. On each of the main 6 pin connectors, it says PCI-E, which is exactly the slot my card is in. So, I think I did everything correctly in connecting the power supplies.

And yes, this is my first PC build.

Just making sure I don't leave out any potentially related details.

 

[blackwidow_rsa]

The card is in 2d mode, its lower it's clock to save some power, it will jump back to 750mhz once you start playing

 

[JAYDEEJOHN]

Ouch

 

[tnotbdclxvi]

The card is in 2d mode, its lower it's clock to save some power, it will jump back to 750mhz once you start playing

Thanks. Is there anyways I can get it out of 2d mode?

 

[doomturkey]

Dude, don't freaking worry about it. It goes back to 3D mode when you play games. There is nothing wrong with it trying to save a little power.

 

[gillagad]

Heh yah, just run a game and look at it, it'll jump up to 750MHz or whatever you have it set to.

 

[Federov]

You might want to adjust those fan speeds a little higher.. high 70's at idle is not good at all. Id be scared poop less to have it like that.

 

[tnotbdclxvi]

You might want to adjust those fan speeds a little higher.. high 70's at idle is not good at all. Id be scared poop less to have it like that.

How do I do that? I don't see any controls in the catalyst program.

 

[Federov]

I haven't tried messing with fans yet, since I can't in Catalyst, but I don't think that would impact this anyways, as stock should be 750 regardless.

Just a note, my power supply came with two six pin power connectors, and each of those had an additional separate (and optional?) 2 pins connection that could pair up with the main six. I obviously did not use either of the additional 2 pins since the card takes 2 six pins and not 2 8 pins. On each of the main 6 pin connectors, it says PCI-E, which is exactly the slot my card is in. So, I think I did everything correctly in connecting the power supplies.

And yes, this is my first PC build.

Just making sure I don't leave out any potentially related details.

Just read this post of yours... first thing you should do with this card is adjust the fan speeds, I'm seeing more and more people end up with dead cards because they want to mess around with the card first. Especially if your OC'ing it to 790 Core!

I'm running CF 4870's and my hottest one idles around 55C other at 47C one is hotter because where it's seated it doesn't have as good of a air flow. If you need to know how to change the fan speed on 2 cards let me know. I have mine set at the fan speed of 55% on both it's the quietest you'll get while keeping them cold enough.


Follow this link if you have not already.. http://www.pcgameshardware.com/aid,649482/News/Adjusting_the_speed_of_the_HD_4850_und_HD_4870_fan/