AMD 7990

Gerard · 7 Sep 2014 at 00:08

thefogo said:
Yeah that was pretty strange. I read reviews where it ran in the 70s and was quieter than a Titan, yet mine wasn't even close.

I've mentioned it a few times before but to me it just seemed like instead of binning lower voltage cores amd just started using any core they had on these boards to get rid of old inventory. I've seen tons of complaints of them running well into the 90's and comparatively few people saying theirs ran like what the reviews stated, "cool and quiet". Annoying as I really liked the look of the card and I'm in general a fan of dual chip cards since the old voodoo 5500. But when it routinely hit 103c it had to be returned

thefogo · 7 Sep 2014 at 08:34

Gerard said:
I've mentioned it a few times before but to me it just seemed like instead of binning lower voltage cores amd just started using any core they had on these boards to get rid of old inventory. I've seen tons of complaints of them running well into the 90's and comparatively few people saying theirs ran like what the reviews stated, "cool and quiet". Annoying as I really liked the look of the card and I'm in general a fan of dual chip cards since the old voodoo 5500. But when it routinely hit 103c it had to be returned

I think if it was hitting 103C the cooler wasn't in good contact. Mine ran in the low-mid 80s.
Though were you overclocking?

smogsy · 7 Sep 2014 at 08:40

My 7990 replacement got go back again..

thefogo · 7 Sep 2014 at 08:44

smogsy said:
My 7990 replacement got go back again..

You going to go for a refund?

smogsy · 7 Sep 2014 at 08:56

Asking ocuk what options they can offer I'd be happy with a swap to a card I choose or store credit tbh

CaptainRAVE · 7 Sep 2014 at 09:55

GoogalyMoogaly said:
And yet you're tempted by one!

I think they would still need to be a bit cheaper. I don't think I would gain anything other than a cooler graphics card - certainly with the games I play. Doesn't seem worth the extra cash. I hadn't noticed that the 295X2 had come down in the price though

Minstadave · 7 Sep 2014 at 10:05

http://www.anandtech.com/show/7930/the-amd-radeon-r9-295x2-review

This is a great review of the 295x2 vs the 7990 amongst others.

Amazed the 7990 consistently beats a Titan black. 295x2 isn't fast enough and is too power hungry to justify an upgrade from a 7990 even at £700 unless you're running 4k.

Mal X · 7 Sep 2014 at 19:05

Minstadave said:
http://www.anandtech.com/show/7930/the-amd-radeon-r9-295x2-review

This is a great review of the 295x2 vs the 7990 amongst others.

Amazed the 7990 consistently beats a Titan black. 295x2 isn't fast enough and is too power hungry to justify an upgrade from a 7990 even at £700 unless you're running 4k.

well if so then it'll need a waterblock, because mine is way too hot, plus it's undervolted and also has its memory and core backed off too.........i've tested it, there's no fan that will cool it

so what do i need with a waterblock, the same sort of radiator as the 295x2, because i dont want to spend much

Minstadave · 7 Sep 2014 at 19:13

To be honest if you've not got any parts at all it's not cheap:

Pump/res
Waterblock
Radiator
Tubing
Fittings
Fans

However a watercooled 7990 is pretty epic. Mine is running off a mix of old parts I cobbled together and it's silent and overclocked is under 60 degrees.

Mal X · 7 Sep 2014 at 19:56

FLIPPING HECK, but doesn't the 295x2 require that lot too !!!!!! because i see no pump supplied with that card

I've seen a suitable waterblock and then i'll need a smallish radiator like the 295x2.........tubes of course and then a pump ?

Uncle Petey · 7 Sep 2014 at 20:00

The pump is built in like an H80 etc.

If you WC your 7990, you'll want at least a 240 rad minimum.

Minstadave · 7 Sep 2014 at 20:07

240 is plenty for a 7990. I'm using a skinny swiftech one and temps are fine even in summer and overclocked with the fans at 7V.

Mal X · 7 Sep 2014 at 20:08

i'll ring up OC tomorrow......... impressive low temps :eek:

less than 60 with OC, mine is about 94

Minstadave · 7 Sep 2014 at 20:14

I'm not sure building a whole loop is worth it though, wouldn't get much change out of £200 I wouldn't have thought. Probably better off selling up and getting a newer card.

Mal X · 7 Sep 2014 at 20:27

http://www.corsair.com/en-gb/hydro-series-h100i-extreme-performance-liquid-cpu-cooler

will the corsair work if i remove the cpu block and connect it to the GPU waterblock instead.....it looks like it

yea it's a lot of money and getting stupidly close to the much more powerful 295 x2

in addition, i bet those corsair radiator fans are rubbish too !!!!

finally why a 240 rad when the 295x2 is only 120???

Minstadave · 7 Sep 2014 at 20:30

No the corsair has it's pump in the CPU block. Plus the system isn't designed to be taken apart and has no way of refilling it without adding a reservoir to the loop.

The only way to do it would be to buy individual parts.

Uncle Petey · 7 Sep 2014 at 20:44

The 295x2 has fans cooling the vrms etc.
The little rad only does the cores and I think it's a miracle that it manages that tbh.

Ayahuasca · 7 Sep 2014 at 20:49

The 7990 might run hot but for the price some people picked them up for last year brand new was incredible. £430 was the lowest IIRC, if you already had a loop and only needed a block you were laughing for value for money and performance.

thefogo · 7 Sep 2014 at 20:51

Ayahuasca said:
The 7990 might run hot but for the price some people picked them up for last year brand new was incredible. £430 was the lowest IIRC, if you already had a loop and only needed a block you were laughing for value for money and performance.

I got mine for £360

Then sold it a few weeks later for £550 lol

Gerard · 7 Sep 2014 at 23:47

thefogo said:
I think if it was hitting 103C the cooler wasn't in good contact. Mine ran in the low-mid 80s.
Though were you overclocking?

Nope all stock, took it apart and the contacts between the core and heatsink was good. Its rare to hear of anyone getting one that did what the reviews claimed, more often than not its regarded as a hot and loud card.