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up gr4aded from 4870 to a 4870X2 and getting lower fps ?

Mr. May

Mr. May

Mr. May

Soldato
Joined
23 Apr 2009
Posts
3,473
Location
Derby
okay then not so long ago upgraded my 512mb Hd 4870 to a 2gb 4870 X2 and iam seeing lower performance in game's iam running CCC 10.9 as i need it for the HD scaling options wont work on 10.5a

okay to start with i was having problems with the clock's on diffrent gpu's regarding memory and clock speeds but i have installed ATI Tray Tool's and iam forcing the clock's for 2D mode which is 600/400 [GPU/MEM] @1.000v and in 3D mode 775/[email protected] and i have checked in gpu-z that both the gpu's are running at full speed and working

i think my problem lies with the rest off my rig which are as follows

Zalman Z 7 Plus With 4x server grade fan's 2 front 2 side
E5300 @ 3.5
Asus Rampage Formula x48
2x2gb 1066mhz corsair dominators
Zalman CNP9700
2gb His HD4870X2
Thermaltake Toughpower 650w

i think it is my cpu which is bottle necking the system but my understanding of a bottle neck is where one part off the system can not achieve any high so why have i seen a drop in FPS is this due to it being a multi gpu card ? the benchmarks i have run are farcry2 and all the just cause one's

far cry 2 went form 46FPS with the 4870 512mb to 40FPS on the 4870 X2

all setting where maximum @1920x1080 with no AA

just cause 2 went from 37 to 27

mainly high settings @1920x1080 no AA 2xAF

is there some thing wrong with my card ? does forcing the clocks with ATT not work ? or is it just my cpu which iam finding a bit hard to belive as i should be atleast gaining a couple off fps shouldnt i ?

Edit: can one off the dons please correct my title please :)
 
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Installed the latest xfire profiles? You should also be seeing an ati crossfire logo when both of your 4870 gpus are in use.
 
i've downloaded V1.0 and installed it how do you know if its worked ? just running farcry 2 benchmark now to see if i've gained any fps
 
which tray ? ati tray tools ?

Edit: found it ran the bench mark and the crossfire logo come's up gpu-z confirms full clock's on memory and gpu and still getting the same results and i've installed the latest xfire profiles
 
Last edited:
Mr. May said:
which tray ? ati tray tools ?

Edit: found it ran the bench mark and the crossfire logo come's up gpu-z confirms full clock's on memory and gpu and still getting the same results and i've installed the latest xfire profiles
Click to expand...

Sorry I just saw your sig and ruled out any chance of a bottleneck :p I think that e5300 is the problem (even when oc'd). If you've got all the latest drivers and profiles, etc and xfire is definitely working I'd believe that to be the issue. There are other/older drivers you could try, which allegedly perform better with a 4870X2.
 
i know it would bottleneck it but surley i shouldnt be getting a lower score than 1x 512mb 4870 ?

i think the cards playing up as well as i have ran a few benchmarks and it will just crash with a load of red lines all over the screen going up and down :mad: and the funny thing is the temp's have not even hit 80 yet which for X2 is good i thought so i might get in touch with the seller from MM
 
Phoenixdancer said:
If you turn cat ai off he will loose a gpu .. Dumbass above :p
Click to expand...

lol, thanks :p :rolleyes:

I had read that Cat AI gave issues with some games, so thought it was worth a shot. I didn't realise it turned crossfire off, so I'll take dumbass as a compliment :D


Hmm.. is the PCI-E slot running @ x16 ? (can be checked in GPU-Z)
 
Scougar said:
lol, thanks :p :rolleyes:

I had read that Cat AI gave issues with some games, so thought it was worth a shot. I didn't realise it turned crossfire off, so I'll take dumbass as a compliment :D


Hmm.. is the PCI-E slot running @ x16 ? (can be checked in GPU-Z)
Click to expand...

just for clarification the Dumbass comment was not ment to be rude :D
 
Phoenixdancer said:
just for clarification the Dumbass comment was not ment to be rude :D
Click to expand...
:cool:

-------------------

Was just thinking about this thread. I ran 260 SLI and compared it against single 260 in BCBF2. As far as I'm aware that is a fairly cpu intensive game. I was only running at 3Ghz (maybe less, can't remember), and 1920*1200, but the difference was incredible. Surely 2 260's offers a similar level of performance to a 4870x2, and given that I was running an e4300 @ 3ghz, and the OP is running an e5300 @ 3.5Ghz, he should see an easy improvement?

Surely it has to be something other than being bottlenecked?
 
Zalman Z 7 Plus With 4x server grade fan's 2 front 2 side
E5300 @ 3.5
Asus Rampage Formula x48
2x2gb 1066mhz corsair dominators
Zalman CNP9700
2gb His HD4870X2
Thermaltake Toughpower 650w
Click to expand...

Hey, Mr. May. TT650W was never certified for the 48xx series and under AMD's requirements it is the bare minimum wattage (although they always err on the safe side): http://support.amd.com/us/certified/power-supplies/Pages/details.aspx?item=409 and http://www.amd.com/uk/products/desktop/graphics/ati-radeon-hd-4000/hd-4870/Pages/ati-radeon-hd-4870-system-requirements.aspx

You also clocked your CPU a tad and have a few 'server grade' fans, which can push your power envelope up a notch under load. Rampage also draws more power than your typical run off the mill x48 motherboard. If you reused the PSU from the previous build and it is getting on a bit, chances are, it dropped some of its output over time. This is common for PSUs over one year of daily use.

Get your favourite monitoring tool out, or just get this for a quick run:
http://www.cpuid.com/softwares/hwmonitor.html

Open it up so you can see the figures, and run a stress testing application, e.g. Furmark, a benchmark set or a demanding game with all the image quality / resolution cranked up, as this is where 4870x2 would perform best, although it is not as efficient as two HD4870 1GB cards paired together. Some thing that also stresses the CPU would be ideal! Leave it to run for a few minutes.

Then look at what is happening to your system voltages, especially the 12V rail. If your values are dipping under 5% of their ATX stated spec or you crash out, then chances are the HD4870x2 is not getting enough juice, which is why your frame rates dip below a single 4870 card and indeed it would explain why the clocks/voltages on the GPUs were being modified by CCC, in the first place.

If so, you can clock down your CPU to the default 2.8 GHz, disconnect a fan or two, and try again - in primarily graphics rendering scenario this should not matter much, but it will drop your power requirements and you should see the FPS improve slightly. But you would have to up the PSU a bit in the future.

If all is well on the voltages front, then it could be a matter of a more general system overhaul or a wait for AMD to patch the issue away - but one would think they would have noticed a 10 point drop in the games you mentioned by now!
 
thanks for the reply's every one i think it may be the psu as iam also running 6x hdd's off it and a odd iam thinking about gettin a q9450 to put in there but i think i might be looking at a new psu before i do that what do think would be a good replacment i thought 650w should be enuff as my watercooled i7 with 2x275gtx's and a 8600gt plus 2x hhd'd and a odd plus lights and and six fans runs fine on my TT 850w

so on the shopping list is a quad core and a new psu

i have also found that if i underclock the card to 725x875 25mhz of gpu and memory it doesnt artifact any more so i think it maybe a power issue and if i just run a gpu intensive thing like furmark it was fine for 45 minutes and didnt go over 82 degress on the hottest core and also pass's prime 95 easy but if i stess both in a game benchmark it will crash after a couple off tests at full clocks

would low power cause my card to artifact and crash ? as the same with cpu's and not enuff voltage as iam forcing the clocks and voltage to the card

just came across this thread and it seems that i shouldnt be using over 650w surley ? http://forums.overclockers.co.uk/showthread.php?t=17957765

i found these two systems

[email protected] (1.35v)
4x2gb ram (2.2v)
gigabyte x48-ds5
2x 4870x2 (stock)
2x sata HD
1x dvdrw
1x xonar d2
5x led fans
1x xpsc res / pump
2x uv cathodes

idle 317w
load 554w

x-fire enabled
idle 331w
load 627w

DFI Lan Party DK 790FXB-M2RSH
Phenom 9850BE
4GB 8500
4850 512MB
6 hdd's
X3 DVD±RW, Blu-Ray Rewriter/HD-DVD ROM
x1 36cm fan, x1 25cm fan, x1 17cm fan, x1 12cm fan
x4 AC Ryan 12" CCFL
Zalman ZM-MFC2 Multi Fan Controller/power load meter monitor
pci dvb-s2 card, pci-e dual dvb-t card
X-Fi XtremeGamer
Hi-Power 900W Modular

idle at 251w , underload when gaming is 367w

that was is as close as i could get to my system my cpu should be drawing less and also has 6x hdds like me so i cant be using more that 280w more than him can i ?

and that guy is running a quad core and 2x 4870X2's and still not getting 650w ?
 
Last edited:
datalol-jack said:
Hey, Mr. May. TT650W was never certified for the 48xx series and under AMD's requirements it is the bare minimum wattage (although they always err on the safe side): http://support.amd.com/us/certified/power-supplies/Pages/details.aspx?item=409 and http://www.amd.com/uk/products/desktop/graphics/ati-radeon-hd-4000/hd-4870/Pages/ati-radeon-hd-4870-system-requirements.aspx

You also clocked your CPU a tad and have a few 'server grade' fans, which can push your power envelope up a notch under load. Rampage also draws more power than your typical run off the mill x48 motherboard. If you reused the PSU from the previous build and it is getting on a bit, chances are, it dropped some of its output over time. This is common for PSUs over one year of daily use.

Get your favourite monitoring tool out, or just get this for a quick run:
http://www.cpuid.com/softwares/hwmonitor.html

Open it up so you can see the figures, and run a stress testing application, e.g. Furmark, a benchmark set or a demanding game with all the image quality / resolution cranked up, as this is where 4870x2 would perform best, although it is not as efficient as two HD4870 1GB cards paired together. Some thing that also stresses the CPU would be ideal! Leave it to run for a few minutes.

Then look at what is happening to your system voltages, especially the 12V rail. If your values are dipping under 5% of their ATX stated spec or you crash out, then chances are the HD4870x2 is not getting enough juice, which is why your frame rates dip below a single 4870 card and indeed it would explain why the clocks/voltages on the GPUs were being modified by CCC, in the first place.

If so, you can clock down your CPU to the default 2.8 GHz, disconnect a fan or two, and try again - in primarily graphics rendering scenario this should not matter much, but it will drop your power requirements and you should see the FPS improve slightly. But you would have to up the PSU a bit in the future.

If all is well on the voltages front, then it could be a matter of a more general system overhaul or a wait for AMD to patch the issue away - but one would think they would have noticed a 10 point drop in the games you mentioned by now!
Click to expand...

just tested intel burn test and fur mark multi gpu and the 12v's are droping to 11.21/10.59/11.21 on full load and on idle its about 10.87v
 
D'oh. Just tested mine (gtx 260), and lowest was 11.93v on furmark load. 12.1v when idle.

10.87v is way too low i believe. How are the PCI-E cables connected? Not using just one rail are you?
 
Scougar said:
D'oh. Just tested mine (gtx 260), and lowest was 11.93v on furmark load. 12.1v when idle.

10.87v is way too low i believe. How are the PCI-E cables connected? Not using just one rail are you?
Click to expand...

the psu comes with 1x6 pin and 1x8 pin its none modular which are the same connections that come on the 4870x2 so i thought it would be okay as it was with in the recomanded wattage
 
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