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Help overclock my 270X

post #1 of 23
Thread Starter 
This is my plan. I'm going to be upgrading my Gigabyte 270X for a 290 or 290X in the coming months. So my plan is to try and overclock my GPU without worrying about it burning in 6 months or a years time. Problem is I've never really played with GPU overclocking and the little I tried failed in BSOD a couple of times then I gave up.

So if people give me specs to put into my card to try that would be awesome or if you have one and want a test dummy that's cool to.

Another thing what software should I run? Maybe MSI Afterburner or something else?

My specs:
i5 4670k @ 4.2ghz with Cooler Master T4 Hyper cooler
Gigabyte R9 270X OC Windforce
Asrock Z87 Pro 4
Ripjaw X 16GB CL9 @ 2133mhz
840 EVO 250GB SSD
Thermaltake EVO Blue 2.0 750w (recently found out they can have unstable 12v rails)


The 270X default clock speeds are GPU 1100 / Memory 1400... I have it set it at 1200/1400 plus 5% power using AMD Overdrive without any failures yet but I haven't put it through much load to properly test it.

I have no idea if the voltage helps but it hasn't crashed so I'm gonna run with it unless someone tells me different
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post #2 of 23
Thread Starter 
Okay I've had 3 crashes in 10 minutes and it seems no matter how big or little I go with the GPU core clock it crashes as soon as I do anything graphic intensive.

I'm trying different setting with minus power settings to see if that helps
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WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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post #3 of 23
Thread Starter 
Through vigorous trial and error I have found a overclock than doesn't BSOD with a generous amount of load, more testing and fine tuning will go into it but at least it's a start.

All using AMD Overdrive
GPU core clock 1150mhz(+50) with negative 10% power limit
Memory clock 1550mhz(+150)

The difference is definitely noticeable doing the bench test in Tomb Raider at a mix between high and ultra with the ultra hair setting. I gained an average of just over 10fps. These stats aren't concrete and now it's more stable I'll try and find more conclusive numbers with averages, highest and lowest.
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WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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post #4 of 23
Why on earth would you put on a negative 10 power-limit? rolleyes.gif
Download Afterburner, and use that instead. It doesen't load up the OC on start-up unless you set it to do that, which is very useful when trying out overclocks. Also, you can (probably) adjust voltage with afterburner aswell, which helps you attain higher clocks and stability. Power-limit just prevents the card from throttling due to too high power-draw.
post #5 of 23
Thread Starter 
I just ran it negative cause on the graph it sent it towards the green and it wouldn't run any other way. I'll download afterburner in the morning.
i was just stabbing in the dark with this so with a bit of guidance im sure i will get there
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Hard DriveHard DriveHard DriveCooling
WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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post #6 of 23
Thread Starter 
Quote:
Originally Posted by Hattifnatten View Post

Why on earth would you put on a negative 10 power-limit? rolleyes.gif
Download Afterburner, and use that instead. It doesen't load up the OC on start-up unless you set it to do that, which is very useful when trying out overclocks. Also, you can (probably) adjust voltage with afterburner aswell, which helps you attain higher clocks and stability. Power-limit just prevents the card from throttling due to too high power-draw.

I have GPU-Z and Afterburner now. I'm still running the negative 10% power limit (if set at zero it crashes without fail with little amount of load) cause it is runs stable and I'm getting 1.206v across the core while being constant and very stable. Also I can't adjust my voltages with afterburner even when selecting it in the setting menu.
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Hard DriveHard DriveHard DriveCooling
WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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post #7 of 23
Just noticed, you have a Windforce. Most of them are voltage-locked, so you can't actually adjust the voltage without flashing the bios (?). I do find it weird that -10% power helps. Maybe it's throttling so much that it never actually reaches the top clock speed, I don't know. You could enable the Afterburner OSD to see what's happening though. Also, I'd like you to try nudging back the memory, and see if you can reach a higher core clock if the memory is at stock. Core clock has a larger impact on performance than memory.
post #8 of 23
Thread Starter 
I can undo the memory clock and increase the core clock. When it BSOD I loose all the info on what is actually causing the failure.
today i ran tomb raider on ultra for about two hours without a problem at an average of around 40fps. Just wanted to stress it more than anything else, i got temps of around 60c on a day that was 35 outside
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i5 4670k LGA1150 3.4MHz Asrock Z87 Pro4 Gigabyte Radeon R9 270X OC Windforce G.Skills Ripjaw X 2133mhz cl9 
Hard DriveHard DriveHard DriveCooling
WD Green 1TB Samsung 840 EVO 250GB Samsung 2TB Cooler Master Hyper T4 
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Win7 Ultimate 64bit Asus ve247h Logitech G105 Thermaltake EVO_BLUE 2.0 750w Modular 
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Cooler Master N400 2 Windowed Logitech G300 Sennheiser HD 280 PRO Gigabyte s2000  
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post #9 of 23
I just set the power limit to +20% and start increasing the core clock inch by inch with stability testing between increase. Forgive me if I am wrong, but I don't think the +20% will hurt, it will only use as much as it needs to and AMD I don't think would put it on CCC if you couldn't safely use it...

If you're worried about temps set-up a custom fan profile in Afterburner...

forgive me if I have misunderstood something here?
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post #10 of 23
Temperature for the GPU is fine, leave it under 80°C and you'll have no issues with overheating for 24/7 use. VRM temperatures may be a worry if you do a BIOS flash and alter the GPU voltage.
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