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[Official] The AMD Radeon 7800 Owners Club - Page 94

post #931 of 4099
Quote:
Originally Posted by gurusan View Post

What is your default voltage?
BTW saying you don't intend to increase voltage and then expect a good overclock is pretty silly.
Where can I see default voltage?

I didn't say I expect good overclock, but I expected I could at least get +11% without touching the voltage.
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post #932 of 4099
GPU-Z will tell you, make sure you are loading the card with something like kombustor or heaven benchmark when you read it though.
    
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post #933 of 4099
Just wanted to update my condition. I don't know if anyone really remembers, because its quite a few pages back when I discussed my problems. I was having an issue with my HD7870 causing a system hang after it idled for a great deal of time. There was no real pattern to it, in terms of a time period, however it only happened at idle, and only happened when I tried to bring it back out of idle after an extended period of time. It has never crashed while gaming, or surfing the net, only when idle.

Let me make it clear that I am using 2 monitors, one via HDMI and an additional one connected via DVI. In windows I had my power configuration set to turn off my monitors after 20 minutes and I had nothing disabled in bios in terms of C states. A few times my computer blue screened when I went to wake it up. A few times my monitors came on as if they were coming out of their low power state, but then just cycled between inputs. The frequency at which this happened was fairly random, it wasn't consistent, but it did happen at least once every other day. I only run my computer in the evening and shut it off before I go to work in the morning, I believe this is why it may have been so intermittent.

At any rate, I have found that disabling the power settings to turn off my monitors and disabling all C-states for my CPU in UEFI has fixed the issue. I believe what is happening is that when the system goes idle, and the monitors turn off after 20 minutes, the GPU goes into a low power state. AMD calls it "Zero Core" I believe. When I attempt to wake it, it may have some sort of issue with stability and it causes the driver to crash.

I had someone PM me with a similar issue. He too was using two displays, and would have system hangs and crashes when he was surfing the net (2d clocks). He had some interesting findings as well. He said that when he unplugged his second display, his idle temps dropped a good 10c. His issue was not the same as mine, but included one similarity, the utilization of dual displays. I find it very interesting and curious that his temps dropped 10c when he disconnected his second display. I also find it interesting that disconnecting his second display also fixed the issue. Perhaps a second display makes this issue more pronounced, or is the cause itself. Perhaps its just a driver bug, I don't really know.

Im not sure if this is a driver issue ( we both are using 12.4) or if it is a hardware issue. I did notice that they supposedly fixed a "system hangs when system goes to sleep" issue with the 12.6a beta drivers but im not sure if this is the same issue that we are having or not.

At any rate, I apologize for the long winded post, I just wanted to share my experiences and findings as of late, in the event anyone else is having this issue or a similar one.
Edited by Mattb2e - 6/2/12 at 8:50pm
post #934 of 4099
The waking up from sleep error is a know bug within AMD Catalyst, there are ways to work around it which you have found out yourself to.

10 degrees hotter with 2 monitors is perfectly normal, with 1 monitor it fals back to lower idle clocks then with 2 monitors.
The higher idle clocks when using 2 monitors result in a bit higher idle temperature, it doesnt effect 3D temperatures though.
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post #935 of 4099
Quote:
Originally Posted by gurusan View Post

GPU-Z will tell you, make sure you are loading the card with something like kombustor or heaven benchmark when you read it though.
Kombustor says it's 1.075V.
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post #936 of 4099
Hey guys, don't forget to PM me if you want to be added.

I've made my first attempt at an overclock this weekend, nothing much but something I know will be stable.
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Ultrima RPX56
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post #937 of 4099
Hello all, I was reading/skimming through the thread and I didn't find anything that would shed some light on the question I have about the 7850. I plan on getting either an Asus, Sapphire or MSI non OC'd version as I can do that myself. I was curious if this card would be able to run both a 1080p and a second monitor running at 1680x1050?I will use the 1920x1080 for gaming and the second monitor will be used for web browsing, streaming controls, music etc. Will I be able to max out d3, WoW, LoL, CS:GO, Tera, GW2 with the second monitor doing what I stated earlier?
post #938 of 4099
Quote:
Originally Posted by I_Try_Pregame View Post

Hello all, I was reading/skimming through the thread and I didn't find anything that would shed some light on the question I have about the 7850. I plan on getting either an Asus, Sapphire or MSI non OC'd version as I can do that myself. I was curious if this card would be able to run both a 1080p and a second monitor running at 1680x1050?I will use the 1920x1080 for gaming and the second monitor will be used for web browsing, streaming controls, music etc. Will I be able to max out d3, WoW, LoL, CS:GO, Tera, GW2 with the second monitor doing what I stated earlier?

Your answer is simply yes. I am running the same setup as you, a 23" LG @ 1920x1080, and a Samsung 22" @1680x1050. You will also be able to max all of those games.
post #939 of 4099
You have a 7870 though did you OC your 7870 or is it running stock? Cause the 7850 only matches up with a 7870 stock from what I have understood. Also do you happen to know if it would run two monitors at 1080p if I upgrade my second monitor?
post #940 of 4099
hi, just bought a sapphire 7850 and i manage to oc it to cc to 1150 and mc to 1400 and dare not try any further with stock voltage

but i am facing some problems when running heaven benchmark on default clock with both 12.3 and 12.6 catalyst. I have some artifacts on 1 or 2 scenes but when i run furmark under both 12.3 and 12.6 i dont have any artifacts at all. Which i *think* it is just driver problem, but i need to get some assurance. Anyone can help?
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