7770 Mining Stats

[Sp0tter]

I got a 7770 today and here are my stats so far.  Stock voltage. Watts column is 'watts above idle'.  Arch linux, catalyst 12.6-5 beta, cgminer, ambiant temp of 80F

Intensity	Mh/S Hash	Core	Mem	Watts	Temp (c)	Fan
1	90	1000	1125	39	59	32%
3	148	1000	1125	47	64	37%
3	166	1150	1125	48	64	38%
9	186	1000	1125	53	68	40%
9	214	1150	1125	55	72	44%
9	224	1200	1125	58	74	46%

[1713548974]

1713548974

[GenTarkin]

thats pretty damn effecient, wonder how much less it would be in watts if mem was dropped.

[Sp0tter]

thats pretty damn effecient, wonder how much less it would be in watts if mem was dropped.

I haven't tried much.  I did set it with aticonfig but when the clock goes back up, the mem jumps back to the max.  It seemed to drop ~4 watts in idle mode when mem was down to 300.   I am guessing if I properly setup the profiles I can get it to stay at 300.  If not now, then later as the 7xxx is better supported.  This card is my main GPU driving 4 monitors, so low memory clock causes screen flickers.. so I have not really looked into it.

[imsaguy]

7770 you mean?

Edit: I see, the topic says 7770 but the body said 7700. That's what was throwing me.

[eroxors]

Very nice, thanks for posting.

The 7770 seems to have matured into a decent 5770 replacement.

[scifimike12]

Also prices are falling which is nice to see.  I remember the 5770 staying at ~$135 for about 1½ years, even when the 6770 was introduced.

[MrTeal]

Your numbers look a little strange, are you sure they're correct?
For instance, going from 1000 to 1150 is a 15% increase in clock speed and gave you a 12% increase in hash rate, but only a 2.1% increase in power consumption above idle.

[Sp0tter]

Your numbers look a little strange, are you sure they're correct?
For instance, going from 1000 to 1150 is a 15% increase in clock speed and gave you a 12% increase in hash rate, but only a 2.1% increase in power consumption above idle.

Measured everything with my kilawatt...   my numbers are as accurate as kilowatt and  idle system power stablility are...

[jjiimm_64]

Your numbers look a little strange, are you sure they're correct?
For instance, going from 1000 to 1150 is a 15% increase in clock speed and gave you a 12% increase in hash rate, but only a 2.1% increase in power consumption above idle.

Measured everything with my kilawatt...   my numbers are as accurate as kilowatt and  idle system power stablility are...

I am glad you used a killawatt.  Please post the numbers for the entire rig for each clock, that is the only number that really matters anyway

[Sp0tter]

Your numbers look a little strange, are you sure they're correct?
For instance, going from 1000 to 1150 is a 15% increase in clock speed and gave you a 12% increase in hash rate, but only a 2.1% increase in power consumption above idle.

Measured everything with my kilawatt...   my numbers are as accurate as kilowatt and  idle system power stablility are...

I am glad you used a killawatt.  Please post the numbers for the entire rig for each clock, that is the only number that really matters anyway

It is 100 watts idle exactly.   So just add a 1 in front of those numbers...

[crazyates]

I just got one of these for my brother's new computer, and I decided to start playing with it: http://www.newegg.com/Product/Product.aspx?Item=N82E16814125415

It's mining at 1100,950,1.200, for about 203MH/s. It's factory OC'd, so I didn't touch the core and just set the memory lower manually using CGMiner, along with -k diakgcn -I 6 options on Win7x64 and 12.6(with included SDK).

Idle before card: 83W
Idle with card: 89W
Mining with card: 157W.

157W - 83W = 74W for just the card. That's 2.7MHs/W, which isn't bad.

Note, I bought this card for 140, with a 20 rebate. Its since gone down to 110 with a 20 rebate, so for $90, it's not bad. I'm gonna return mine and buy a new one at the cheaper price.

[Sp0tter]

Yea, it really is a great value all around ( except for density of course ).

[crazyates]

I just used AB 2.2.1 to lower the mem speed down to 300, and it lowered my system usage down to 149W, which is 66W for the card. This bumps it up from 2.7MHs/w to 3.0MHs/W.

It's currently 67C @ 37% fan.

[Sp0tter]

Ah, as far as I know there is no way to get memory down to 300 with a high core still in linux, so I haven't been able to measure it that way.

[-ck]

There may be a 150 difference limit between the engine and memory clocks, just like on the 79x0 cards. Try adding --gpu-memdiff -150
to your cgminer parameters.

[Sp0tter]

There may be a 150 difference limit between the engine and memory clocks, just like on the 79x0 cards. Try adding --gpu-memdiff -150
to your cgminer parameters.

Does that go before or after my --no-adl ?