2x 5770's or 1x 5850?

bigjimmyauk · 14 Jan 2010 at 13:21

dan7777 said:
5850 is a 5870 when overclocked so i would go with that period.

i'd like to see how long ur 5850 lasts at 1000/1200

dan7777 · 14 Jan 2010 at 13:24

temps are good so should be good.... heres a benchmark single 5850... my new record..

bigjimmyauk · 14 Jan 2010 at 13:28

Whats your memory temps show me a GPU-z at full load

dan7777 · 14 Jan 2010 at 13:32

70-75 full load playing crysis been playing it 45 mins no crashes so assume its all good. im sorry you dont like the fact that a 5850 can keep up with a 5870

Vir · 14 Jan 2010 at 13:35

I'm going crazy

Should I get a 5770 x 2 or maybe 1 x 5850.... or should I stretch it to 5870, I could..... but it's a lot of money.....but no cards are available... and oooooh Fermi might arrive soon.... what's this 5830, could it be good in crossfire?? Wooooshaaaa

bigjimmyauk · 14 Jan 2010 at 13:35

dan7777 said:
70-75 full load playing crysis been playing it 45 mins no crashes so assume its all good. im sorry you dont like the fact that a 5850 can keep up with a 5870

It wouldn't 45 minutes is nothing in the long run, run furmark for 6 hours, then do a furmark burn for a while with VPU recover enabled. I doubt your card will last 6 months (what make is it)

dan7777 · 14 Jan 2010 at 13:37

Vir said:
I'm going crazy

Should I get a 5770 x 2 or maybe 1 x 5850.... or should I stretch it to 5870, I could..... but it's a lot of money.....but no cards are available... and oooooh Fermi might arrive soon.... what's this 5830, could it be good in crossfire?? Wooooshaaaa

save your money on going 5870 route and get the 5850 it will surpass the 5870 when overclocked so no worry there, then get anthor on CF if you want when prices drop.

bJN · 14 Jan 2010 at 13:37

I would always suggest a single card solution as it always gives you the opportunity to Crossfire at a later date if you feel the performance is lacking.
I think that really you should be comparing the two HD5770s and a single HD5850 in terms of price instead of the HD5870 unless you are willing to spend that extra £100.
Now that the 5770 drivers are starting to mature they really do scale well in Crossfire, so much so that they can outperform a 5850, will sometimes outperform a 5870 and on one or two occasions keep up with the flagship 5970.
In terms of size, with the 5770 it would be advisable to have a motherboard with a fairly large gap between the PCI-E connections as the top card can get a lot hotter due to airflow issues in Crossfire. In terms of length, there is/was a image hosted on OcUK that showed the differences in length, if I remember correctly the 5770 was rather tiny but the 5850 wasn't much bigger, perhaps an inch?
One thing that is often overlooked when contemplating GPUs is to not just look at average performance charts showing how high the FPS can reach, but rather how LOW they can reach. Even in Crossfire the HD5770s can stoop to very low minimum FPS in many games, so much so it can become choppy at higher resolutions with max details. This is an issue that will take time to overcome, as drivers should optimise the card in the coming months to get rid of this problem.

@bigjimmyauk the 5850s can last suprisingly long on those speeds

Vir · 14 Jan 2010 at 13:38

dan7777 said:
save your money on going 5870 route and get the 5850 it will surpass the 5870 when overclocked so no worry there, then get anthor on CF if you want when prices drop.

Yeah I think I will! 5850 is looking really good :]

bigjimmyauk · 14 Jan 2010 at 13:39

dan7777 said:
save your money on going 5870 route and get the 5850 it will surpass the 5870 when overclocked so no worry there, then get anthor on CF if you want when prices drop.

yeah watch it surpass the 5870 for 6 months until it dies then get shafted when u rma it and they test the board to see u fiddled the bios

cause if it dies you can't do nothing altho bench testing they can get the bios out of it LOL

atmax1 · 14 Jan 2010 at 13:39

TaKeN said:
How did you work that out?

lol well 2x5770 is little beter then a 5850 on its own, but i be leave 5850 does better in dx 11? plus you can always get a 2nd 5850 so to me it's better then a 5770 and a 5870 is better then the 5850 and 2x 5770s lol.

Ritsugamesh · 14 Jan 2010 at 13:39

Single card solution, 5870 is the best. You can get them for little over £300 now, the Club3D one is about £320 if I'm not mistaken.

Single card solution is just stabler than a crossfire one, plus it has oppurtunity for crossfire later if you really want more power.

dan7777 · 14 Jan 2010 at 13:40

bigjimmyauk said:
It wouldn't 45 minutes is nothing in the long run, run furmark for 6 hours, then do a furmark burn for a while with VPU recover enabled. I doubt your card will last 6 months (what make is it)

whats the pointing in running furmark for 6 hours lol running crysis will find if my gpu is unstable did before but all good now. furmark can kill a gpu easily running it for 6 hours WTF! crysis is the best for stressing gpu. :eek:

dan7777 · 14 Jan 2010 at 13:42

when running games im sure the 5870 is better by a few fps but nothing that noticeable vantage scores seem to be on par with the 5870 or if not beating it so im very happy with mine.

does the few fps warrant the £100 extra for the 5870 nope!

craptakular · 14 Jan 2010 at 13:45

Where are people getting an extra £100 between the 5850 ad 5870?

I can find 5870's between £299 and £325, yet the cheapest 5850 that is in stock is circa £240-£250+

I wish I could find a 5850 for £200 in stock

bigjimmyauk · 14 Jan 2010 at 13:45

dan7777 said:
whats the pointing in running furmark for 6 hours lol running crysis will find if my gpu is unstable did before but all good now. furmark can kill a gpu easily running it for 6 hours WTF! crysis is the best for stressing gpu.

Crysis dosen't always run at full load and i would never overclock on premise a game played ok for a while thats like overclocking your i7 ans saying well photo shop seemed ok so it must be alright.

sorry mate but you seem a bit immature and just happy that your 5850 is above average speed.

and i wouldn't disregard furmark so easily a stock card would run it for 6 hours no problem so why would you not want to make sure your overclocked version would,

besides i use combinations of everything

game testing,furmark,ati tool,noise,mem temps,cool off times after being at a high load then drooping to a low load..

TBH i don't think you've looked into it very well

bigjimmyauk · 14 Jan 2010 at 13:50

Sorry to the op about this i just feel your being made over confident by someone else's claims

don't take into account purely overclocking

look at stock for comparisons then if your happy about buying at stock then purchase and once your happy you know whats going on then maybe try overclocking
besides that overclocking won't always give gr8 results sometime 1-2 fps

i just looked at a overclocked 5850 that had less FPS on far cry when overclocked compared to the stock version i'll go get the link now

rolypolyman · 14 Jan 2010 at 13:50

More than pleased with my 2 X vapor-x and I see they have dropped in price, damn it to hell, etc etc....Anyway they run cool, around 35c @ 35% fan when surfing and when gaming on Fallout 3, 55c on 50% fan both speeds are quiet. I did run a few benchmarks with Unigine DX11 test and with cards maxed out at 80% fan temps were 62c.

bigjimmyauk · 14 Jan 2010 at 13:51

http://tech.icrontic.com/articles/overclocking-the-radeon-hd-5850/5/

there it is all the overclocking fuss it was far cry that got less FPS when overclocked compared to stock

dan7777 · 14 Jan 2010 at 13:51

bigjimmyauk said:
Crysis dosen't always run at full load and i would never overclock on premise a game played ok for a while thats like overclocking your i7 ans saying well photo shop seemed ok so it must be alright.

sorry mate but you seem a bit immature and just happy that your 5850 is above average speed.

and i wouldn't disregard furmark so easily a stock card would run it for 6 hours no problem so why would you not want to make sure your overclocked version would,

besides i use combinations of everything

game testing,furmark,ati tool,noise,mem temps,cool off times after being at a high load then drooping to a low load..

TBH i don't think you've looked into it very well

i dont see the need to run furmark for 6 hours does anyone else ? ive heard so many bad storys of people killing there cards running furmark for to long so i run it for 30 mins and we will see but the fact is ive played the most demanding game maxed out 1920x1200 4AA surely that would stress the card enough to make it unstable if it was but its running fine. im not immature im just stating a fact why spend the extra on a 5870 when there aint much different at all really. to be honest if your on a budget op then go 2x5770 but a single 5850 would be better.