CPU/GPU total watts

[charlie]

I'm getting information for the Applications Engineer who's working with me on my cryo-chiller. She needs to know the total load in WATTS of my rig. So what's the best guess out there for combined wattage of a "highly" overclocked FX-51 and a R9800Pro? I'm guessing 230W???????????
Guesses?
C

[xDUCK]

Originally posted by charlie
I'm getting information for the Applications Engineer who's working with me on my cryo-chiller. She needs to know the total load in WATTS of my rig. So what's the best guess out there for combined wattage of a "highly" overclocked FX-51 and a R9800Pro? I'm guessing 230W???????????
Guesses?
C

230W is pretty generous, IMHO. Should be fine (unless you are designing for an uber-specific thermal load, and 200w will cause a constant state of liquid or something :)).

[xDUCK]

Originally posted by MickeyMouse
I say 250w would be more about right ;0

Really? We are talking 1.65v (Vcore, anyway) here, aren't we? :confused:

[charlie]

This a 100% full tilt benching only rig (heck my cooler is a direct die 230V 7 amp beast lol @ -140C) so I'll be dialing in all the V it can take...probably north of 1.9V
C

[Major]

Charlie, IMO you would want to get it tweaked for a little higher wattage than what you plan on running right now for future processors. I'd say 250watts would be a good round number too.

[saaya]

9800pro=45W id say
9800pro+higher vgpu=~60W
fx-51=less than 80W
fx-51+higher vcore=100-120W

id say around 180W of heat maximum , probably only 150W or even less.

mickey, you dont honestly think its 250W right?

charlie, make sure she doesnt build it so it can remove the heat your system produces but builds it to keep all the chips to -40°C or thereabout!

if keeping a 300W heatsource below -30°C doesnt cost that much extra id go for 300W. will be enough to keep a dual core a64 and a nv40 or r420 at -30C.

[xDUCK]

Originally posted by charlie
This a 100% full tilt benching only rig (heck my cooler is a direct die 230V 7 amp beast lol @ -140C) so I'll be dialing in all the V it can take...probably north of 1.9V
C

Ahh, I was under the impression that the A64 boards didn't POST at anything over stock voltage (or simply ignored the BIOS setting and switched to default). Now that I think about it, I remember it was BIOS version related, and has been fixed.

[xDUCK]

Originally posted by MickeyMouse
a 9800p@2v gpu @570mhz will pull my vapo down as low as my 2500=barton at 1.85v@2400mhz put it that way.. ;)

You pumped 2v through your GPU?:eek: I was under the impression 1.85v was that safe max (even for benchmarking) and 1.9v was the absolute non-instant-death max... And here I am benching with my Prometeia 549 core at only 1.78v... Think 2v might help? :D

[saaya]

barton@10x240+1.85v=100W max heat... a vapo isnt very efficient, even if you get the same temps i doubt that a 9800@2v produces 100W of heat.

what temps are you getting?

xduck, amd cpus can take a LOT of volts. some people are running 2.2v for months without a prob. bartons love 2v+

[charlie]

Hopefully there's a bit of flexibility involving the load temps. She didn't return my call today, so I guess I'll talk to her tommorrow.
I know the system is very finely tuned to the load, thus the -140C temps. It'd be nice to give her a range of loads, like 180-250W...
C

[xDUCK]

Originally posted by saaya
xduck, amd cpus can take a LOT of volts. some people are running 2.2v for months without a prob. bartons love 2v+

I wasn't talking about Bartons - I'm talking about the A64 (and 9800 Pro Vgpu). ;)

[charlie]

Yeah,
I can see it now...holding a blowtorch on the evap block to get the compressor to run at startup until the CPU/GPU heat up...the hobbies we get ourselves into...right?
C

[saaya]

i doubt that a 9800pro produces more than 2 times its originaly heat when you raise the gpu voltage by only 30%. maybe the insulation on the gpu isnt that good so thats why you get bad temps mickey. and about opterons and a64s and the fx, they produce extremely little heat compared to other cpus.

according to amd the absolute max heat output of future a64 cpus will not exceed 89W, and they are planning to go as high as 2.8ghz on their roadmaps with the 13µ a64s and opterons! i guess an fx-51 @default speed and voltage produces ~55W of heat.

EDIT: theres a max vcore for a64 cpus? did anybody fry his a64 with too much voltage already? link?

[STEvil]

250-300w.

[charlie]

If you tune it for too HIGH a wattage, the chiller won't properly "flash" it's refrigerant. It has to be a pretty close match.
C

[saaya]

and if you tune it for a too high wattage itll waste energy... a LOT of energy... i would say 250Wmax

what coolant will this thing work with? is it a mix? if yes then you can "fine tune" the thing by changing the mix of the coolant!

[charlie]

It's a proprietary blend of gases....ultra top secret stuff...
I get what they give me...lol So I have to make the evap end of the rig match the spec's of the rig.
C

[saaya]

then go for 250W and if the system put out less heat ...add another heat source :D let it cool a second cpu instead of the videocard or add another head to cool 2 cpus and a videocard :)

if i were you id call amd and ati and ask them to tell you how mayn watts the parts produce more or less at default. calculating the overclocked wattage is easy from there.

tell them its just for yourself and you can give them an nda bla bla bla whatever they want.

edit: i think -100°C is enough btw, i dont think -140°C makes a diference and some cpus dont like those low temps... no idear if the a64 likes it... and nobody has cooled a gpu that low afaik... who knows if it likes those temps. -100°C should be absolutely fine ... but i wouldnt go much lower.

[antipop]

Charlie have finally decided to pay the $1000 or so to get this beast running?
That's awesome, give us the result once the set up is done