Topic: HD7770 & HD7750 mining thread (Read 49986 times)

Just wanted to tell you guys I managed to get stable hashrate @ 205 K/Hash on my ASUS 7770 directCU 1GB

edit: this one https://www.asus.com/Graphics_Cards/HD7770DC1GD5/

I tweaked the settings everywhere I could without flashing any bios or anything.

settings with most impact:

Engineclock: 960 Mhz
Memoryclock: 1450 Mhz
vddc: 1.225v
thread-concurrency : 8192
Intensity: 16 or 17...


Full config report:

I have a SAPPHIRE HD 7750 1GB GDDR5 LOW PROFILE (ATI chipset). I bought it because it fits in my computer and has low power drain. I run the graphics at stock GPU clock 800 MHz, Mem clock 1125 MHz. I don't overclock because the card is already running at 80C and 99% activity. I use Windows 7 Pro 64 bit 4 Gb RAM with CGWatcher v1.3.4.6 with CGMiner 3.7.2. Catalyst Version is 13.9 or 13.12, PCI Express 2.0 x16.

I run off Multipool  stratum+tcp://pool1.us.multipool.us:7777.

Intensity is 11, any higher and I get HW errors. Worksize doesn't seem to make any difference. In scrypt I get around 140 kH/s and Work Utility is from 110/m to 150/m. Efficiency is around 114%.
Power drain is 45.6W (max 55W TDP).

Here are the settings:
"scrypt" : true,
"verbose" : true,
"auto-fan" : true,
"auto-gpu" : true,
"gpu-threads" : "2",
"gpu-fan" : "33-70",
"intensity" : "11",
"temp-target" : "80",
"temp-overheat" : "85",
"temp-cutoff" : "95",
"temp-hysteresis" : "3",
"thread-concurrency" : "2048",
"submit-threads" : "64"

Sometimes I blank thread-concurrency and use shaders 512 instead. The GPU doesn't seem to get as hot with thread-concurrency 2048.

Also I use my graphics card for playing games, I'm a bit weird that way.


Edit: I've found higher performance settings:

"scrypt" : true,
"verbose" : true,
"auto-fan" : true,
"auto-gpu" : true,
"gpu-threads" : "2",
"gpu-fan" : "25-70",
"gpu-engine" : "300-920"
"gpu-powertune" : "20"
"intensity" : "11",
"temp-target" : "75",
"temp-overheat" : "85",
"temp-cutoff" : "95",
"temp-hysteresis" : "3",
"thread-concurrency" : "2048",
"submit-threads" : "64"

gpu-fan is limited to 70% speed to avoid wearing out the fan.
gpu-engine can be set higher than 920, but the card and/or computer crashes. The computer must be re-booted before playing games. Otherwise the game crashes.
temp-target can be set to 80 during winter, but the card will overheat at 80 during summer. It will need to be set back to 75 during summer.
gpu-powertune is set to +20 to allow the card to use more power.

Any programs that are using a lot of CPU time will slow down the mining programs.

Now in scrypt I get around 162 kH/s and WU is around 140.

At these settings the card is temp limiting to control heat. The card can go faster if the ambient air temp is lower. 164 kH/s seems to be its peak performance.

Taking the lid off the computer case drops the temp by about 5 degrees. It's cost-effective to do mining during winter because it helps to heat the room.

How many and what cards you using?

7770 is a overpowered model of 7750, I think you may be wrong as I am using 7750 for some further havesting.

Total power consumption for the tower is 220w, at idle is 76w. Each 7770 card consumes 72w when mining.

https://bitcointalksearch.org/topic/7750-miningmaybe-not-so-meh-after-all-64368

This chaps getting ~110 @ I = 12, not really on par with the 7770 tbh.

Not bad, but depends what you paid for them - I picked one up for £25 and the other for £50. That's cheaper than one 7750.. 

About the same, 135-140.  Close enough considering how little the 7750 cost.  Plus mine's a low profile card so fits in a smaller case.

Same hashes?   

A single 7770 on intensity 12 manages 150 for me (so not flat out), with two I average 300. What does the 7750 average on same intensity?

7750 is a good little card, does about the same hashes as a 7770, but a lot cooler and quieter (and no need for a PCI-E power cable). 

It looks like the 7750 is more reasonable than 7770.

I may be able to perform the 150Mh/s as I am able to perform 150Khash/s scrypt mining.

It looks like you have configured something wrong, I only use 895/1295 for it.

Thread resurrection. 

Would have posted sooner but the rules put me off, anyway.. What power draw is everyone averaging for their system with these cards and the intensity values?

I have 2x 7770 and during the heat wave a few weeks back the room would be unbearably hot.

200 out of a 7770 is pretty good.  Make sure the VRMs stay cool though.

I see, cheers for the information. That explains why the card was so cheap Ah well at least it's a boost for my mining! I'm using Asus GPU tweak for clocking and it's pretty good.

Here's why:
http://www.gpureview.com/show_cards.php?card1=675&card2=638

The 6970 has a lot more shader processors, and overall is more than twice the card as the 7770.

You are doing good with the 7770.  Mine I can't overclock more than about 5% before the driver starts crashing, even with tweaking the heck out of it to allow for more power, etc, in MSI Afterburner.  :-(

So I usually get about 180-190 MH/s.

Recently bought a HD 7770 card, but I never get more than max 200 MH/s, and that's after I've clocked it. I've got another card, HD6970 or 6950 I think and it gets almost twice the speed. What's up with that? Any tips for me to make it run faster? Currently using the flags worksize=128 VECTORS FASTLOOP AGGRESSION=10 WORKSIZE=128 -f 5.

https://bitcointalksearch.org/topic/underclocking-memory-speeds-correctly-on-7xxx-series-cards-with-afterburner-111891

Crazy - I'm running AB too but it only lets me set 150 below like the other dude said.  How do I get it lower?  or is it b/c I have the 7750?

I'm running the ASUS HD 7750 900MHz overclocked to 1000/850 and I'm getting a steady 148.5 MH/s with 49% fan speed and 69 deg C temp

I'm running GUIminer with -v -f 10 -w 128

Its been running for about 2 days and I'm getting about 0.01 BTC/day plus the same in NMC

My http://www.amazon.com/gp/product/B0079XWPEK/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1&tag=thelinactsho-20 Gets about 133.3 MH/s with bitminter on a core clock of 880 with any of the newer cataylsts I try on ubuntu 12.04.2+.