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Radeon R7 250X 1GB - question about overclocking

post #1 of 5
Thread Starter 
It is from ASUS

https://i.ytimg.com/vi/jo3EGqICiz4/maxresdefault.jpg

I lost my 5850 - > http://www.overclock.net/t/1588352/rip-radeon-5850-need-something-with-similar-quality so I bought R7 250X. I know it is much worse but I don't want to invest anything in this old PC because in 2-3 months I will have new PC.

Anyone have R7 250X? I would like to know what is stable and what no. I was looking for OC test on the internet but there is not much about this one.

I play mostly in Heroes of the Storm and Company of Heroes 2.

Oh - 5850 was like jet - R7 250X is much quieter and have lower temps too.
Edited by Nerish - 1/20/16 at 1:37pm
post #2 of 5
Yeah the 250x is much much lower on power draw but you didn't get an equivalent card performance wise, more like half or 3/4 of the card, but for an in between it's fine. My first suggestion is to make sure you have anti-aliasing OFF in your games as AA is going to hit the card very hard.

As for overclocking, you can't just go by what is stable for other people as no two gpus or cpus are created equal. What software are you going to use for overclocking? My suggestion to you is to start by bumping up your memory clock in increments of 25mhz at a time and then running ungine heaven benchmark, look for driver crashes and/or noticable artifacts, keep pushing up the memory in small increments of ~25mhz until you start noticing these issues, then dial it back a bit and do a longer term test (maybe by playing one of your games for a few hours), again if you have driver crashes or artifacts, dial the mem frequency back a bit (you may want to restart the PC after crashes and artifacts start showing up). Once you have the memory dialed in, repeat the same process for the GPU maybe in increments of 15 mhz and continue running heaven. Take your time and make sure you know which memory speed is stable so if you start seeing artifacts or have crashing issue in longer term game sessions, you know what needs to be dialed back.

You can go in reverse order (GPU first, memory second) but I get the feeling the 250 is going to like as much memory OC as it can get and then scale very well with it with small bumps in GPU. I doubt you're going to get it to match your 5850 but you should be able to get a nice increase, maybe 1125 core 1300 memory. I doubt you'll be able to get control of voltage without a custom bios, not sure with that card.
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post #3 of 5
Thread Starter 
I am using MSI Afterburner and I have installed driver. There is an option in Afterburner to set voltage. It doesn't work without BIOS settings or what?

I don't want to push R7 250X to the limit. I just want something what would be stable.

I don't feel much difference in these games between R7 250X and 5850. I usually don't use anti-aliasing in games.

So 1st memory clock 25MHz and after that 15MHz core clock and testing with ungine heaven benchmark. Ok.
post #4 of 5
Quote:
Originally Posted by Nerish View Post

I am using MSI Afterburner and I have installed driver. There is an option in Afterburner to set voltage. It doesn't work without BIOS settings or what?

I don't want to push R7 250X to the limit. I just want something what would be stable.

I don't feel much difference in these games between R7 250X and 5850. I usually don't use anti-aliasing in games.

So 1st memory clock 25MHz and after that 15MHz core clock and testing with ungine heaven benchmark. Ok.

You don't have to mess around with voltage, you can still get an OC stable (hopefully) on stock volts. Yeah, increments of 25 though, get the memory as high as it will go first, then the GPU. That's just my method, either way you're shooting for the highest combo of mem/gpu.
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post #5 of 5
I had a 250, can't actualy remember the clocks I used to run it at but I remember I went bonkers on it. They don't get that hot so usualy the problem is the voltage not the temps.
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