Radeon 7750 and 7770 says hi! | Bitcointalksearch.org

jgm_coin

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Quote from: kmsalex on July 25, 2012, 11:34:20 PM

Anyone have first hand numbers on the 7750?

I'm running the ASUS HD 7750 factory overclocked to 900, using MSI AB to get 1000/850 for core/mem.

Running GUIminer I get stead 148.5 MH/s using -v -w 128, slightly higher with -f 10 but then I can't stream videos... Its been stable for at least 4 days with temp under 70 and fan under 50%.

If the card is pulling the 55W it claims then I'm getting nearly 3 MH/W or about $20/BTC.

I'm going to start playing with the power and voltage but I'm a little scared since I'm new to this.

Tacotime- what card are you getting 200MH/s with?

salfter

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Quote from: kmsalex on July 25, 2012, 11:34:20 PM

Anyone have first hand numbers on the 7750?

Picked up one of these about a month ago:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125417

It's a 7750, factory-overclocked to 880 MHz. At stock settings, it'll do about 133 MH/s. Temperature is usually in the low 60s; fan speed stays at 39%.

I just started playing with the settings in bfgminer a bit ago. Turned on fan and GPU-engine autotune...fan stopped until the temperature hit 75°C. I can slow the memory down from 1125 MHz to as low as 750 MHz; it got set back to default if I tried 600, 700, or 725. Kicked GPU speed up to 950 MHz...144 MH/s, 70°C, 33%. Kicked it to 975 MHz...something got wedged and I had to look up how to force a reboot:

Code:

echo 1 >/proc/sys/kernel/sysrq
echo b >/proc/sysrq-trigger

Looks like fsck completed OK and bfgminer restarted at stock settings. I think I'll keep it there for a little while.

tacotime

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Quote from: kmsalex on July 26, 2012, 12:50:56 AM

Thats on a 7770? does that need a power cord from the psu?

That's correct. It has a six-pin connector because it occasionally draws >80w when overvolted or in things like Furmark. The rated TDP is 80w. I'm running 1100MHz core and 651MHz RAM with my power control (limiter) setting at -9%. The power control setting is kind of neat, the card throttles if it gets above a certain power usage in watts.

Using diablominer with -v 1 -w 256 -f 10

It's actually a great card for $100, essentially it's 1/3 of a 7970.

kmsalex

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Learn as you go...

Quote from: tacotime on July 26, 2012, 12:46:03 AM

Quote from: ElectricMucus on July 25, 2012, 11:39:47 PM

That performance is to be expected, it shows how gpu architecture as bottomed out since it is the same performance as 5770/6770.

Eh, I'm only pulling 60w at 200MH/s, I'm happy enough with 3MH/s/watt.

Thats on a 7770? does that need a power cord from the psu?

tacotime

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Quote from: ElectricMucus on July 25, 2012, 11:39:47 PM

That performance is to be expected, it shows how gpu architecture as bottomed out since it is the same performance as 5770/6770.

Eh, I'm only pulling 60w at 200MH/s, I'm happy enough with 3MH/s/watt.

ElectricMucus

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That performance is to be expected, it shows how gpu architecture as bottomed out since it is the same performance as 5770/6770.

kmsalex

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Learn as you go...

Anyone have first hand numbers on the 7750?

Sp0tter

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Quote

That wiki is a good starting point, but it's not at all complete (or accurate) half the time. Maybe I've been lucky, but I've always gotten 10-20% higher than what that list says I should be getting on my hardware.

The wiki is wrong beyond repair. There needs to be a cleaner peer-reviewed complete list...

Quote

Yeah, I noticed that your rates were higher... you should definitely add your cards and settings to the bitcoin mining hardware wiki. At the time of posting, this was the highest reported rate I could find on the boards.

It's just a regular 7770 at 15% OC... no voltage changes... default cgminer settings..

crazyates

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Quote from: eroxors on June 18, 2012, 09:47:51 AM

Quote from: Sp0tter on June 15, 2012, 03:55:07 PM

Quote from: eroxors on April 20, 2012, 05:22:39 PM

Quote from: ARapalo on April 02, 2012, 12:47:28 PM

So are these 7770 worth it over the 5770?

Not even close. Check here: https://bitcointalk.org/index.php?topic=64241.20

Max for 7770 is around 180 Mh/s with significant overclocks

I get 224 mh/s on my 7770 @ 15% oc.

Yeah, I noticed that your rates were higher... you should definitely add your cards and settings to the bitcoin mining hardware wiki. At the time of posting, this was the highest reported rate I could find on the boards.

That wiki is a good starting point, but it's not at all complete (or accurate) half the time. Maybe I've been lucky, but I've always gotten 10-20% higher than what that list says I should be getting on my hardware.

eroxors

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Quote from: Sp0tter on June 15, 2012, 03:55:07 PM

Quote from: eroxors on April 20, 2012, 05:22:39 PM

Quote from: ARapalo on April 02, 2012, 12:47:28 PM

So are these 7770 worth it over the 5770?

Not even close. Check here: https://bitcointalk.org/index.php?topic=64241.20

Max for 7770 is around 180 Mh/s with significant overclocks

I get 224 mh/s on my 7770 @ 15% oc.

Yeah, I noticed that your rates were higher... you should definitely add your cards and settings to the bitcoin mining hardware wiki. At the time of posting, this was the highest reported rate I could find on the boards.

Sp0tter

sr. member

Activity: 285

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Quote from: eroxors on April 20, 2012, 05:22:39 PM

Quote from: ARapalo on April 02, 2012, 12:47:28 PM

So are these 7770 worth it over the 5770?

Not even close. Check here: https://bitcointalk.org/index.php?topic=64241.20

Max for 7770 is around 180 Mh/s with significant overclocks

I get 224 mh/s on my 7770 @ 15% oc.

Brunic

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English isn't a language that makes any sense; don't expect it to.

I agree. I never understood the "Oh, you know, English is easy to learn!". Yeah sure, if don't mind that like 85% of your verbs are "irregular" and that words are chopped in half everywhere.

"The 've? Oh, that is the word "have", you don't recognize it? I know, it's missing 50% of the letters, but it's the SAME thing!" Took me decades to master this art... Grin

rjk

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1ngldh

Quote from: Brunic on April 20, 2012, 09:18:12 PM

The plural form of "say" is "say"?

Correct. "A and B say hi" is the plural form, and "A says hi" is the singular form. Additionally, "I say hi" is the correct singular form when using "I", and "We say hi" is the plural form when using "we".

It gets a bit confusing sometimes. Wink