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[Official] AMD R9 280X / 280 & 270X / 270 Owners Club - Page 526

post #5251 of 9745
Quote:
Originally Posted by BruceB View Post


Drawing 359W from 300W Input.
Just out of interest: does that work ok?
I expected the Card to shut down if it treid to draw more power than it could.

 

Worked just fine for all the benches I was running; 359W was the highest I saw.  I was using 3DMark11, Unigine Heaven/Valley, and FFXIV benchmark. 

 

If you can dissipate the heat then you can push them further than intended.  Keeping the components cooler increases their efficiency as well.  Check that link out, by attaching an AIO to a 290X they got a measurable drop in power consumption of 26W.

 

http://www.legitreviews.com/nzxt-kraken-g10-gpu-water-cooler-review-on-an-amd-radeon-r9-290x_130344/4

 

Quote:
Originally Posted by FtW 420 View Post


The power connectors' rated specs are ratings, the 6 pin pci-e plugs are rated for 75W like the pci-e slot, but a card can still pull 500W + from 2 x 6pin connectors & the slot if you push it that far.

 

I'm sure they can, and from the looks of your avatar that probably happens in scenarios where LN2 :specool: is involved; an unlikely scenario for most of us.

 

 

Quote:
Originally Posted by shilka View Post


Sory i am a little late in here, Anyway what i wanted to say is 80 plus has nothing to do with quality.
You can find junk thats gold rated the most famous or infamous of those is the Raidmax AE and the EVGA SuperNova NEX models as well
This is better then google

http://www.realhardtechx.com/index_archivos/Page5471.htm

 

I wouldn't recommend a Raidmax anything to anyone, probably ever.  Odds are you are better off with something that has a high rating than to one with no rating at all.  A little research before purchasing a PSU can tell you whether or not the rating holds true. 

Thanks for that link :)

Quote:
Originally Posted by BruceB View Post


thumb.gif

That's a good score, I think an OC'd 270X might be the sweet spot for price/performance.

 

7870/270X are arguably the price/performance ratio king, especially, if you're running 1080P.  $200 for is a great deal for the performance you get with these cards.

Quote:
Originally Posted by bardacuda View Post

When trying to find your max stable clocks, it's best to leave the memory at stock (normally 1400), and increase only the core (and voltage) till you find your max core, doing your stability tests after each change to verify. After you've done that, leave the core and voltage set to your newly found maximums, and then start increasing the memory, and stability testing after each increase until you've find your max mem clock. Then you're done.

With this method, when you find an instability, you'll know whether it's the core or the mem that's the problem and can adjust the right one.

Keep in mind you may have to increase your power limit too and it's perfectly fine...just make sure you keep your voltage and temps in check.

 

That's precisely how I get my overclocks.  It is time consuming, but if you want to know your cards true maximum capabilities this is it. 

 

Keep track of your clocks, volts, temps, and bench scores when you do this.  You'll start to see a trend eventually for where pushing the card past a certain point isn't yielding that much of a performance gain.

 

My 290 is capable of ~1300/1700 +200mV with power maxed.  I haven't run my card at those clocks since I found them because it is extra unnecessary strain on the card, my MoBo, and PSU.  After looking at my OC/Bench spreadsheet I found that 1200/1500 was where I was getting 90-95% of the performance of abusing the card at absolute max.  For gaming the card is at 1200/1500 +87mV.

Quote:
Originally Posted by Anonizer View Post


Yes, the 270x devil's clocks are pretty high! I'll be waiting the results of your 270x devil! :thumbsup: I hope you have a magical card there biggrin.gif The reviews says that it can't qualify for 80+ certification cause it doesn't have a PFC circuit, though the efficiency of the PSU is at 80~85%. Overclocks everywhere! Thanks! :thumbsup:
Oh, thanks for the informative posts bardacuda, roboyto. That clears up the things about that power limit thing. I'll take note of that one. +
-
Had been overclocking the card, runs fine at heaven at 1170/1450 but gives a red screen at the firestrike portion of 3dMark until I lowered it at 1140/1450. As for the memory I can only get it to 1460 anything above will cause a "amd driver has stopped responding" at heaven, so didn't bother to test it on 3dMark. I didn't adjust anything besides those two, fan speed at 70% and the temps never got up to 60c. Power limit and voltage at defaults though.

 

Me too :laugher: I have been fortunate with nearly all of my AMD card purchases.  I have had phenomenal performers of: (3) HD4890s, HD7770, HD7870, HD7950, and my R9 290. 

 

My buddy just bought a Visiontek R9 280X, so we'll be testing it out very soon.  He ordered a Kraken G10 off of ebay last night and a Corsair H55 to install on it :Snorkle:

 

If your card is hitting 1160 on stock volts/power it sounds like you may have a very good performer there.  The GPU core can safely run in excess of 90C, and most VRMs are capable of tolerating over 100C.  I wouldn't really suggest letting either of them hang in the 80+ range for extended periods of time however.

Quote:
Originally Posted by Anonizer View Post
I'll probably try to fiddle with the voltage and power limits tomorrow, since I don't want to do any harm to the card cause of my inexperience since I still have no idea on what voltage should be the "safe" max and how much should I increase every try. smile.gif Thanks for the advise! thumb.gif I'll hope this will overclock well when voltage and power limit comes into play.

 

Small jumps in voltage, maybe 7-10mV each time.  With air cooling you will likely run into problems keeping the card cool enough before you get outside of safe voltages.  Make sure you keep an eye on those VRM temps once you start adding volts/power

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post #5252 of 9745
Thread Starter 
Quote:
Originally Posted by Bruska View Post

Please add me: Shapphire Vapor X r9 270X --> 1250 - 1500

Between, is this result good for my OC?




You have been added. Welcome !!! Not a bad Valley score. Here is a HD7870 Devil runs I did a while back, can't get the 270X that high and won't try now because they are in cross-fire.


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post #5253 of 9745
Quote:
Originally Posted by Roboyto View Post

That's precisely how I get my overclocks. It is time consuming, but if you want to know your cards true maximum capabilities this is it.

Keep track of your clocks, volts, temps, and bench scores when you do this. You'll start to see a trend eventually for where pushing the card past a certain point isn't yielding that much of a performance gain.

My 290 is capable of ~1300/1700 +200mV with power maxed. I haven't run my card at those clocks since I found them because it is extra unnecessary strain on the card, my MoBo, and PSU. After looking at my OC/Bench spreadsheet I found that 1200/1500 was where I was getting 90-95% of the performance of abusing the card at absolute max. For gaming the card is at 1200/1500 +87mV.

Me too laugher.gif I have been fortunate with nearly all of my AMD card purchases. I have had phenomenal performers of: (3) HD4890s, HD7770, HD7870, HD7950, and my R9 290.

My buddy just bought a Visiontek R9 280X, so we'll be testing it out very soon. He ordered a Kraken G10 off of ebay last night and a Corsair H55 to install on it Snorkle.gif

If your card is hitting 1160 on stock volts/power it sounds like you may have a very good performer there. The GPU core can safely run in excess of 90C, and most VRMs are capable of tolerating over 100C. I wouldn't really suggest letting either of them hang in the 80+ range for extended periods of time however.

Small jumps in voltage, maybe 7-10mV each time. With air cooling you will likely run into problems keeping the card cool enough before you get outside of safe voltages. Make sure you keep an eye on those VRM temps once you start adding volts/power

Yeah, it's definitely time consuming especially when running 3dMark then find out that it'll crash at the last part of firestrike. tongue.gif Thanks, noted!
Overclocks! devil.gif I hope, so that I can have more fun with this new card. I find overclocking more fun than playing games, not sure what's the problem with me. lol. There's a problem though, I don't know how to check my VRM temps, HWinfo64 only shows VRM Power Out, GPU-Z only shows up to Memory Usage (Dynamic) and VDDC.

=

I just searched about bios versions of r9 270x vapor-x Bios (Click to show) Mine's "015.039.000.001.000000" and the latest one is "015.041.000.000.000000"
Should I upgrade? Is it safe?
Edited by Anonizer - 4/11/14 at 8:37pm
post #5254 of 9745
Quote:
Originally Posted by Anonizer View Post

Yeah, it's definitely time consuming especially when running 3dMark then find out that it'll crash at the last part of firestrike. tongue.gif Thanks, noted!
Overclocks! devil.gif I hope, so that I can have more fun with this new card. I find overclocking more fun than playing games, not sure what's the problem with me. lol. There's a problem though, I don't know how to check my VRM temps, HWinfo64 only shows VRM Power Out, GPU-Z only shows up to Memory Usage (Dynamic) and VDDC.

=

I just searched about bios versions of r9 270x vapor-x Bios (Click to show) Mine's "015.039.000.001.000000" and the latest one is "015.041.000.000.000000"
Should I upgrade? Is it safe?

I forgot already about your limited list of stats in GPU-Z...hmm, I'm not sure why your card is like that. My Devil 270X has the VRM temperature.

Maybe try contacting manufacturer regarding the BIOS flash and the seemingly small list of statistics shown in GPU-Z and HWiNFO. I can't give you an informative answer on how safe the flash is...It may work fine, and it may not.
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post #5255 of 9745
Quote:
Originally Posted by Roboyto View Post

I forgot already about your limited list of stats in GPU-Z...hmm, I'm not sure why your card is like that. My Devil 270X has the VRM temperature.

Maybe try contacting manufacturer regarding the BIOS flash and the seemingly small list of statistics shown in GPU-Z and HWiNFO. I can't give you an informative answer on how safe the flash is...It may work fine, and it may not.

Elpida memory that can't be overclocked + no VRM temps. Oh why bigeyedsmiley.png

I already messaged them, I hope they reply soon! rolleyes.gif

=

Stock clocks, power limit, voltage.
Fire Strike Run (Click to show)

Core - 1210 Mem - 1450 VDDC - 1240 Power Limit - 0 (Not changed)

Max temps not exceeding 65c at 100% fan speed.
Fire Strike Run (Click to show)

When I add 5~ to core/memory it'll result in a red screen on Fire Strike. Tested +50 on power limit and 1300 VDDC still red screen.
Edited by Anonizer - 4/12/14 at 3:04am
post #5256 of 9745
@Anonizer

Sounds like you've reached the memory limit. Memory does not respond to the voltage as it only changes the voltage applied to the core. Also a red screen is the kind of thing that would happen with unstable VRAM. Unstable core would more likely result in flickering artifacts here and there (but not the whole screen) or BSOD/reboot.

Going so high above stock with the voltage should easily, easily, get you another 5MHz on the core (and more likely up to 1250+ MHz stable).

This is why you should only increase one thing or the other between stability tests, but again it looks like you've already found your max mem clock (1450), so just leave it there and focus on the core.

EDIT: Just wanted to add, on air, 1300VDDC is probably around the range where you might want to start thinking about your VRM temps. Since you don't have a sensor you'll have to just be careful and cross your fingers basically. If you're going to play around with 1.3V or more you should at least have a fan blowing directly on the PCB of the card. I like to just take the side panel off the case and blast it with a regular stand mount fan or a box fan like a person would use in their living room or whatever.
Edited by bardacuda - 4/12/14 at 3:39am
post #5257 of 9745
@bardacuda

I see! Thanks! I overclocked the core first until I found the value that doesn't give me a red screen (1210). I didn't change the memory while doing that, the default memory clock of this card is 1450.
When overclocking this card the only things I have experienced are "red screen that makes pc reboot after 5 seconds" and "amd display driver stopped responding".

The card will stop functioning if something goes wrong with the VRMs right? On MSI AB the core voltage slider is grayed out even after enabling unofficial overclocking and checking the unlock voltage options. On sapphire trixx the max value of the VDDC is 1300. Guess I'm lucky since my side panel fan blows directly to the PCB of this card and it's pretty near too, it also runs at max speed.

So if I wanted to add another couple of MHz on the core I should downclock the memory?
post #5258 of 9745
If you're at 1.3v on air. Those crashes means either overheating or lack of voltage. What was the core clock?
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post #5259 of 9745
Ohh ok...hmm....sounds like it is a core stability issue then and not the mem in that case. Please ignore my last post lol. I wouldn't downclock the memory at this point and you probably have some headroom to actually increase the memory, but need to work out the issues with the core first.

It is very strange that 1210 MHz works with 1.24V though...and 1215 MHz crashes with 1.3V. I mean...you do hit a wall at some point, but really it's more of a "slope that gets very steep very quickly" than an actual wall. An extra 60mV should get you an extra 5MHz even if 1210MHz is your "wall".

EDIT: About the VRMs, the answer is yes. If you kill your VRM circuits you kill your card and you will have to hope they take an RMA.

Maybe check in the GPU-Z sensor tab to verify that trixx actually did apply 1.3V and you weren't still running at 1.24...cuz like I say it is very strange that only a 5Mhz increase would become unstable with an extra 60mV applied.

EDIT2: If you're using the Basic version of 3DMark, although it is a good stability test, I'd recommend something else to do a quick check for stability before sitting through 3 different demos and benchmarks. Something like MSI Kombustor or Furmark would be ok just to do a quick 5 minute check or something. Or try one of the Unigine benchmarks for a longer but less intensive test (still way quicker than 3DMark). After you've found the general range of where your wall is, and your thermal and voltage limits, then maybe try getting 3DMark stable last. You may have to lower your OC a bit to be stable in FireStrike and stay under the thermal ceiling after sitting through all the other demos and benches along the way, as opposed to say Valley. But at least you'll know you're already very close to stable and will probably only have to knock off 10 - 20 MHz or add 10 - 20mV or something like that. Should save a lot of time.
Edited by bardacuda - 4/12/14 at 6:00am
post #5260 of 9745
Just a quick question about OC capabilities of various cards:
My Powercolor 280X is made by Tul Corp. when you look on 3DMark's leaderboard for single 280X GPUs most of the top ranking/highest overclocked cards are from PC Partner.
Which brands are manufactured by PC Partner? Why are these cards better for OCing?
 
20€ LAN PC
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CPUMotherboardGraphicsRAM
AMD FX 8350 @ 4.6 GHz / 5.1GHz Boost asrock 990fx fatal1ty Pro Powercolor R9 280X Turboduo @ 1125 MHz Cosair 4x4GB @ 1333MHz 
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PNY XLR8 120GB Seagate 1TB Fractal Kelvin S36 Windows 10 64bit 
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Sea Sonic XP2 660W Cosair Carbide 300R (modded) Sennheiser HD429 
CPUMotherboardGraphicsRAM
Intel Core 2 Duo E6400 Acer workstation MB Inno3D 9800GT Green 2x1GB no--name RAM 
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20€ LAN PC
(8 items)
 
 
CPUMotherboardGraphicsRAM
AMD FX 8350 @ 4.6 GHz / 5.1GHz Boost asrock 990fx fatal1ty Pro Powercolor R9 280X Turboduo @ 1125 MHz Cosair 4x4GB @ 1333MHz 
Hard DriveHard DriveCoolingOS
PNY XLR8 120GB Seagate 1TB Fractal Kelvin S36 Windows 10 64bit 
PowerCaseAudio
Sea Sonic XP2 660W Cosair Carbide 300R (modded) Sennheiser HD429 
CPUMotherboardGraphicsRAM
Intel Core 2 Duo E6400 Acer workstation MB Inno3D 9800GT Green 2x1GB no--name RAM 
Hard DriveOSPowerCase
80GB 5400RPM ex-laptop HDD Win XP :) no-name 650W PSU Modded - See thread 
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