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[Official] 7870 Tahiti LE (XT) Owners Club - Page 24

post #231 of 5223
Quote:
Originally Posted by murzyn View Post

Can u guys tell me what voltage do u use to get 1200 on core, or maybe u use only power limit?
I got BIOS 0.30 and i can only make stable 1160 on core :/

Use the 28 or 32 bios, you will hit 1200 easily.
post #232 of 5223
Quote:
Originally Posted by Viviox View Post

Hi guys,

I've just jump ship on this card http://www.newegg.com/Product/Product.aspx?Item=N82E16814131484 due to the recent sale, and also to replace my old EVga GTS 450. I haven't receive my new GPU yet, but I have several questions regarding this card.

I heard that this card is very power hungry, and I was wondering if my current system can handle it and that my component won't be a bottle neck.

Processor: Intel i5-3570k
Mobo: Gigabyte Z77X-UD3H with F7 Bios
Memory: 4 X 8GB 12800 DDR3 Crucial Extreme RAM (don't remember the actual name)
PSU: Corsair 520HX
HDD: 2x 320GB in raid 0, 1x 2TB, 1x 750GB

Do you guys think my current PSU will be able to handle the 7870 Tahiti Le? Also, I heard that the card doens't work well with the Gigabyte Z77 series Bios, so should I upgrade my Bios too?

I have a Zalman Fan Controller that measures power consumption. With the 7870 Tahiti, I am at 180 watt idle and 450 watt peak in large Crysis 3 sets, usually 442 watts throughout game. My system has 3 180mm fans, a Liang DDC 2 water pump, 3 hard drives, and a 120mm exhaust fan. My amd cpu, I think, is a 125 watt model - Phenom II 975 @ 4.1 ghz.
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post #233 of 5223
I am back again, and I am bummed! My past is haunting me!
So yesterday night I flashed my EZ to 028 and OC'ed stable upto 1100/1500, and now today I wanna test push it 1200/1500....but as soon as I turned on my PC, the card fan revved up 100%, and no display on the monitor. The PC boots fine with mobo post beep and and all. I shut it down and restarted and now had the video back up with no crazy fan speeds!
Now, this is exactly what happened 2 years ago when I was trying to install a Radeon 6870! Same 100%fan, no video problem. People on Tom's Hardware suggested changing my PSU which was a Thermaltake 500W, as people said the real power output is not that good on it and the only good PSU's would be an Antec or Seasonic. So I bought and Antec 530W PSU and nothing changed, same old problem persisted! Ended up selling the 6870 and got a XFX 6970 which worked solid for 2 years until I bought this Tahiti GPU. And now the damn thing is back again! Any solutions/suggestions/thoughts? frown.gif

EDIT: My mobo: ASRock A780GXE/128M w/ AMD Phenom II X6 3.8Ghz
Edited by lucky88shp - 3/30/13 at 9:39am
post #234 of 5223
Quote:
Originally Posted by Mates Rates View Post

I've used both the 030 bios and 032. My card came with the 030 bios. My experience of both as follows:

032 bios
Installing this bios and setting the power limit to +20, the card would throttle. Only around 60% gpu usage

030 bios
Power limit set to +20, the card did not throttle and would always perform at 90-100%.

Power limit set to 0% on both these bios', the card did not throttle, always performed at 90-100%

If you're still experience throttling I recommend setting Unofficial overclocking mode to without Powerplay support in Afterburner.

My Afterburner config may be of use to you, I have attached it. Replace the CFG in the Afterburner root directory.

I recommend MSI Afterburner 3.0.0 Beta 7 as it supports voltage control for tahiti cards.

http://www.guru3d.com/files_details/msi_afterburner_beta_download.html

MSIAfterburner.zip 1k .zip file
030 bios.zip 105k .zip file

For a stable 1200/1500 overclock, I need to set my voltage to 1.231V

I also recommend using Afterburners 3D/2D profile management, as pictured below.

VtFgvNn.png

I can confirm that this will eliminate throttling. In addition, I am convinced Poweplay is causing the problem and must be disabled in Afterburner. This means for me, I cannot use the Trixx gpu tweak utility.

I downloaded the Sapphire 30 bios from techpowerup (just to be safe) and installed it on my Powercolor Myst. As a result, I can now overclock better, I think but cannot verify. Temps are a little higher than under Trixx, probably due to no throttling. I am in the process of re-doing my oc work of the last few days.

Good luck everyone.
Edited by Bluesman - 3/30/13 at 11:47am
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post #235 of 5223
Long time lurker 1st time poster. So glad you guys started a thread! I just pulled out my GTX 570 to go into my nephews build. The 7870 Tahiti le myst was to good of deal to pass up! My Mobo supports crossfire so its win win situation. I'm picking the card on Monday from Newegg. Sounds like the new Myst editions are being shipped with 32 bios?? Any problems I should know about ?
post #236 of 5223
Quote:
Originally Posted by lucky88shp View Post

I am back again, and I am bummed! My past is haunting me!
So yesterday night I flashed my EZ to 028 and OC'ed stable upto 1100/1500, and now today I wanna test push it 1200/1500....but as soon as I turned on my PC, the card fan revved up 100%, and no display on the monitor. The PC boots fine with mobo post beep and and all. I shut it down and restarted and now had the video back up with no crazy fan speeds!
Now, this is exactly what happened 2 years ago when I was trying to install a Radeon 6870! Same 100%fan, no video problem. People on Tom's Hardware suggested changing my PSU which was a Thermaltake 500W, as people said the real power output is not that good on it and the only good PSU's would be an Antec or Seasonic. So I bought and Antec 530W PSU and nothing changed, same old problem persisted! Ended up selling the 6870 and got a XFX 6970 which worked solid for 2 years until I bought this Tahiti GPU. And now the damn thing is back again! Any solutions/suggestions/thoughts? frown.gif

EDIT: My mobo: ASRock A780GXE/128M w/ AMD Phenom II X6 3.8Ghz


I had this happen with a 7850. What fixed it was to always run 2D at default clocks (see my post above). Set a profile in afterburner for 2D.
Edited by Bluesman - 3/30/13 at 11:46am
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post #237 of 5223
Quote:
Originally Posted by Bluesman View Post

I had this happen with a 7850. What fixed it was to always run 2D at default clocks (see my post above). Set a profile in afterburner for 2D.

Which post#?
Also, AB only loads after you get to your windows desktop....mine shows no video from the very beginning, from the point I press the physical power button on my Chassis! Was that also your exact problem?
post #238 of 5223
Just received my MYST from, I think I am going to return it sealed so I don't get charged restocking! IMO, EZ is better as I can bump the fan speed all the way upto 80% and still fairly quiet as my case is already quite loud with all the 80mm fans....I know MYST with its metal shroud will sound like a blow dryer(know from experience on a Radeon 6970)
post #239 of 5223
^^Looking @ the shroud on both cards I can totally understand where your coming from. Noise and cost of metal shroud is probably why they changed it. My case has 200mm fans and its on floor underneath the desk. Noise is really not an issue. I didn't feel like messing around with Factory rebate. I got Myst for $209.
post #240 of 5223
Quote:
Originally Posted by Tattoedsailor View Post

^^Looking @ the shroud on both cards I can totally understand where your coming from. Noise and cost of metal shroud is probably why they changed it. My case has 200mm fans and its on floor underneath the desk. Noise is really not an issue. I didn't feel like messing around with Factory rebate. I got Myst for $209.

What are your temps idle/load @ an OC of around 1150/1500?
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