Installing a 7990

[Paladone]

hey guys,

So I just got my new 7990 and I was wondering how I would go about installing it correctly? I currently have it running in the second slot, with the 7970 in the first. Do I need to get new drivers for it to work as the primary card?


Thanks a tonne

 

[RCoon]

hey guys,

So I just got my new 7990 and I was wondering how I would go about installing it correctly? I currently have it running in the second slot, with the 7970 in the first. Do I need to get new drivers for it to work as the primary card?


Thanks a tonne

Why not put 7990 in top slot and 7970 in the second slot. Plug your monitor cables into the 7990, attach crossfire cable, reinstall the AMD CCC drivers(required for driver to be installed for the new card), and you should be good to go.

 

[Paladone]

Why not put 7990 in top slot and 7970 in the second slot. Plug your monitor cables into the 7990, attach crossfire cable, reinstall the AMD CCC drivers(required for driver to be installed for the new card), and you should be good to go.

I'll try that thanks; Downloading drivers now.

 

[Outback Bronze]

Actually its not a bad idea to put it in the bottom slot as thses cards get hot. The card will recieve cold air but if its on top it will recieve hot air from the 7970 underneith. Food for thought mate just see how temps go. Nice card btw!!

 

[HammerON]

The "whining noise" is a problem encountered by W1zzard when he reviewed the 7990:
http://www.techpowerup.com/reviews/AMD/HD_7990/31.html
See the "thumbs down" part of the review.
As far as your frame rate with WOW... I just don't know what to tell you. Maybe it is a driver issue. Try a different game or a benchmark to see if you get an increase from just running your 7970.
I will say that at the resolution you are gaming at (1920x1080), adding the 7990 is overkill.

 

[Paladone]

The "whining noise" is a problem encountered by W1zzard when he reviewed the 7990:
http://www.techpowerup.com/reviews/AMD/HD_7990/31.html
See the "thumbs down" part of the review.
As far as your frame rate with WOW... I just don't know what to tell you. Maybe it is a driver issue. Try a different game or a benchmark to see if you get an increase from just running your 7970.
I will say that at the resolution you are gaming at (1920x1080), adding the 7970 is overkill.

Okay, will try that thanks.

 

[Paladone]

The "whining noise" is a problem encountered by W1zzard when he reviewed the 7990:
http://www.techpowerup.com/reviews/AMD/HD_7990/31.html
See the "thumbs down" part of the review.
As far as your frame rate with WOW... I just don't know what to tell you. Maybe it is a driver issue. Try a different game or a benchmark to see if you get an increase from just running your 7970.
I will say that at the resolution you are gaming at (1920x1080), adding the 7990 is overkill.

So I just ran a some tests in 3D Mark 11; The 7990 on its own scored about 15400, and the 7990 and 7970 scored 18782. However, when I run world of Warcraft (In Ultra settings) I am now getting about 60 FPS, however, I occasionally get rediculous lag spikes. Without full screen mode I get around 40-50 mode on Good settings.

 

[the54thvoid]

So I just ran a some tests in 3D Mark 11; The 7990 on its own scored about 15400, and the 7990 and 7970 scored 18782. However, when I run world of Warcraft (In Ultra settings) I am now getting about 60 FPS, however, I occasionally get rediculous lag spikes. Without full screen mode I get around 40-50 mode on Good settings.

Without full screen = no crossfire. Crossfire does not work in windowed mode.

Also, if WOW is a DX9 title the crossfire latency issues have not yet been resolved (I think).

And finally, was WOW not a heavily Nvidia biased game? I'm sure Nvidia hobbled it on AMD cards (or more politically correct, it's coded better for Nvidia).

 

[Volkszorn88]

Yeah 7990 + 7970 is wtf overkill for WoW. You could of saved your self a lot of money and headaches if you would of stayed with only the 7970.

On another note; dual-gpu cards are always a pain. When they work omg do they work, but when they don't it's so frustrating.

P.s.

When playing WoW, try disabling crossfire to see if that helps. Also did you disable ULPS?

 

[Paladone]

Without full screen = no crossfire. Crossfire does not work in windowed mode.

Also, if WOW is a DX9 title the crossfire latency issues have not yet been resolved (I think).

And finally, was WOW not a heavily Nvidia biased game? I'm sure Nvidia hobbled it on AMD cards (or more politically correct, it's coded better for Nvidia).

From what I know, Wow is DX11 but does have a DX9 option. I still don't understand why my FPS is 80-100 with one 7970 but almost exactly the same with a 7990/7970 and exactly the same ingame settings :O

 

[Paladone]

Yeah 7990 + 7970 is wtf overkill for WoW. You could of saved your self a lot of money and headaches if you would of stayed with only the 7970.

On another note; dual-gpu cards are always a pain. When they work omg do they work, but when they don't it's so frustrating.

P.s.

When playing WoW, try disabling crossfire to see if that helps. Also did you turn off ULPS?

What do you think about the Idea of me running the 7970 as the primary card and with all my monitors running off of it. I could then enable crossfire when I play games other than WoW because I do, a lot. Do you know if I will still be able to make use of the full 9GB of VRAM if I don't have the game in full screen?

 

[the54thvoid]

From what I know, Wow is DX11 but does have a DX9 option. I still don't understand why my FPS is 80-100 with one 7970 but almost exactly the same with a 7990/7970 and exactly the same ingame settings :O

WOW does not work well with crossfire it seems.

Until you get to eyefinity... and even then it's meh.

Do you know if I will still be able to make use of the full 9GB of VRAM if I don't have the game in full screen?

You only have 3Gb of VRam per gpu. Don't be misled by sales talk. If you want lots of VRam you need to buy a card with high VRam per gpu (such as the Sapphire HD 7970 6G btoxic)

 

[RCoon]

WOW does not work well with crossfire it seems.

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_1600_900.gif

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_1920_1080.gif

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_2560_1600.gif

Until you get to eyefinity... and even then it's meh.

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_5760_1080.gif

WoW does not care about GPU's much, it only cares about single core performance. It will more than likely utilise 1 core, the higher it's clocked, the better it will run.

 

[Paladone]

WOW does not work well with crossfire it seems.

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_1600_900.gif

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_1920_1080.gif

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_2560_1600.gif

Until you get to eyefinity... and even then it's meh.

http://tpucdn.com/reviews/Palit/GeForce_GTX_780_Super_JetStream/images/wow_5760_1080.gif




You only have 3Gb of VRam per gpu. Don't be misled by sales talk. If you want lots of VRam you need to buy a card with high VRam per gpu (such as the Sapphire HD 7970 6G btoxic)

Wait so If I were to run the 7990 and 7970 together in crossfire I would not have 9? Do you think that the 3GB would then be sufficient to run three 1080p monitors?

 

[Volkszorn88]

3gb is more than enough for that resolution.

 

[Paladone]

So all was well and going perfectly until suddenly, when I logged back into the game, my FPS was about 10. I have reset my computer multiple times now and it issue has not been resolved.

http://i.imgur.com/JJN0EvH.jpg