Mining Gear. | Bitcointalksearch.org

lolmiepp

newbie

Activity: 46

Merit: 0

Thank you guys, i went for a more expensive HD 5870, which runs 24/7 now at 430 mhash/s
the temps are 70-83:)

only the middle card is not doing very well.
it get's 85 degrees with only 230mhash/s.
it's not the airflow (Antec twelve hundred with 2 extra fans)
so i'm thinking i'll change the thermal paste soon, i've got some artic cooling laying around

OggerMC

member

Activity: 93

Merit: 10

I have this 5850 Twin Frozr.

Right now my limit is 396 Mhash/s.
Running at 1010 mhz core clock @ 1.3 Volt @ 89°C Max, (i dont use it 24/7)
Im thinking of buying a second one of these, but the prices went up too much.
around 2 months ago when i bought mine it was around 140€, now its atleast 170€.

bcpokey

hero member

Activity: 602

Merit: 500

Crossfire can cause some problems with mining, but it's usually not detrimental. It has the upside of not forcing you to create dummy plugs for slave cards though which is a plus.

Non-reference cooler performance varies as much as the coolers themselves. I have a dual fan cooler that essentially blocks the next slot down (the cards are literally touching), but it still cools well if I jam a card in with it (I'm a little worried about physical damage but c'est la vie). I have another non-reference cooler that has no clearance issues but if the fan is not given enough space / fresh air it literally chokes. Jumps to 100% fan speed >90C temps and starts to thermally throttle. I have a lot of reference coolers that aren't spectacular either, basically multi-card setups are a huge hassle.

I'd go with a 5870 personally, cooling does not ensure overclocking, there are very few (I don't know of any) 5850s that can hit 400MHash/sec. Most 5870s can hit at least 420Mhash/sec without volt mod on reference cooling. It's hard for me to think in GBP though, so YMMV in terms of returns.

lolmiepp

newbie

Activity: 46

Merit: 0

thanks for the replies.

i think the 5850 is a better deal, when it was only about 1 card.
But as you say, it may get a little too hot in the case with 3 of them.
Does anyone here have some experience with multiple non-reference coolers for mining?

another question: i want to still be able to play games on the cards, so i'll want to put them in crossfire.
Is crossfire a good combination with mining?

anodyne

full member

Activity: 518

Merit: 100

I'd be a bit careful with the non-reference coolers. Many of them work very well in single card configurations, but not so well in multi-gpu setups since the card below will block airflow to top-mounted fans. They also blow more heat into the case, which can cause additional cooling problems.

MiningBuddy

hero member

Activity: 927

Merit: 1000

฿itcoin ฿itcoin ฿itcoin

5850, you should be able to get near on 400mhs with that cooler and a decent overclock.

lolmiepp

newbie

Activity: 46

Merit: 0

Hey guys,

I am planning on buying some mining equipment.
Here in the netherlands i have 2 graphic card options:
The MSI R5850 Twin Frozr II, for €148.90
And the XFX Radeon HD 5870 for€162.35

I want to buy 2 or 3 of them.

I don't know which one to choose, because i know the 5850 is slower, but that one has got a good enchanted cooler.
I finds that important, since i've heard many people here complaining about high temperatures on the cards,
and i don't want to be forced to lower the clock speeds to have a normal temperature.
And maybe the 5850 could be overclocked so it will generate about as much while producing less noise......

I just don't know. Huh

What do you guys think?

Thanks in advance

Topic: Mining Gear. (Read 1574 times)