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DooLocsta

[H]ard|Gawd
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Right out of the box OC to 1050/1500 and they do seem to steadily get 370Kh/s. I will try to tweak more but let me know if you have any ideas.

Power consumption so far looks to be about 50W less than a 7870 Ghz edition.
 
so exactly the hash of my 7850's which was what we were expecting...
 
Good for cheapest, not so great for khs density. If I needed more hash and couldn't find other stuff, I wouldn't hesitate to buy them though.
 
_r2h said:
Good for cheapest, not so great for khs density. If I needed more hash and couldn't find other stuff, I wouldn't hesitate to buy them though.
Click to expand...

for $150 certainly a no brainer if a 270 can't be had under $200 but in the $180 range a 270's gonna be better
 
Exactly. Any increase in hash is better than no increase in hash. :D
 
Thanks for numbers. I wonder what the power draw is. Also 150$ for 400 KH/s sounds like a nice buy.
 
Why are so many people stuck on density? I'm considering selling all but my 270's and spreading out MORE! I'm looking more at ks/watt with $$$ factored in somewhere. On the high end with the whole hynix/elpida thing its quite a gamble
 
Not bad, but the 270 appears to be just as good or better in terms of hash / watt.
 
Some 270s will do 500 hash at 1.163-1.188v (1150/1500 with Elpida). One of my 270s will do that, the other is ~480 hash at 1.163v with 1100/1500. Any higher core clock isn't 24/7 stable. Settling on ~470 hash at 1.100v is hit or miss for me. My cards have horrible ASIC scores and need more volts to be 100% stable. In the end I don't mind running stock volts (1.188) if I can get 490 or more.
 
I'm really disappointed if these have to be heavily overclocked to break 400 kH/s like the 7850s. :(

mkrohn said:
Why are so many people stuck on density? I'm considering selling all but my 270's and spreading out MORE! I'm looking more at ks/watt with $$$ factored in somewhere. On the high end with the whole hynix/elpida thing its quite a gamble
Click to expand...

Every extra card is an extra riser, and maybe even an extra PCIe cable splitter. And then you start having to add extra motherboards, an extra stick of RAM, an extra PSU, and etc. It definitely loses cost effectiveness at some point. I'm just not sure where.

Edit : But I think the 270x is perfect. I was just really hoping the 265 was going to be able to pull off 430-450 KH/s.
 
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I have 2 7870 Ghz that reach 450-470 but this card having only 1024 shaders I believe it will continue to hover around 375.
 
blade52x said:
Lots of 7870s cannot reach 400 kH/s, where as 270x cards are frequently doing beyond 475 kH/s.
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Huh, crappy memory on the 7870s holding it back? Maybe with the reduced shaders of the 265, the memory improvements over the 7850 aren't as significant.
 
DooLocsta said:
I have 2 7870 Ghz that reach 450-470 but this card having only 1024 shaders I believe it will continue to hover around 375.
Click to expand...

I would love to see that. The 3 7870Ghz Ed's I have struggle to hit 400KH/s (and they have the Pitcairn XT core) and that was after I flashed the bios to one of Silt's. 470KH/s from a 7870? I'm calling bullshit.
 
Hm....After testing them out I would rather have 270's or 270x's.

My three 270x's - 460M/hash +

My two 265's - 370M/hash


I was expecting at least 400M/hash with the faster ram, but it didn't seem to help all that much. I even have the r7 265's overclocked to 1050GPU / 1450MEM.
 
This is hilarious -- there are 2 reviews on newegg for this card and they can't both be true:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202096

Review A: ...these cards do not hash any faster than 160 khash/s for litecoin mining - it appears the "gimping" process to cut it down to 1024 shaders had other ill effects. I have written forked versions of cgminer so the issue does not reside with me - there is something wrong with these cards...

Review B: Scrypt mining at 400kh/s each with a little core overclock. Got two on release date for $300 and they are mining at 800kh/s...best hash for the buck if you're mining
 
mkrohn said:
my bet is the guy who forked cgminer really FORKED it up badly
Click to expand...

Correct, I was going to reply but figured it would be a waste of time. I can confirm the cards do 370kh/s but that is about all I can squeeze.
 
my regular 270 models do 430khash, OC'd them a bit, no where near max though (ran into the limit of afterburner) been too lazy to unlock my version to support full on limit less overclocking.
 
collegeboy69us said:
my regular 270 models do 430khash, OC'd them a bit, no where near max though (ran into the limit of afterburner) been too lazy to unlock my version to support full on limit less overclocking.
Click to expand...

No need for Afterburner with AMD cards. Just use cgminer/sgminer to set the clocks. 270s should pretty much all d0 480+ with no need for any real "tweaking". Just launch them with 1100+ core and 1500 memory (if they can, otherwise 1250 or 1340 seem to be good clocks to start) with otherwise good mining settings and you should be good to go.
 
Yeah, my MSI 270s do 477 hash at 1100/1500 (Elpida RAM) at 1.138v stable. I have 3 Sapphire 270s coming this weekend and expect no less from them. Stock volts were 1.188 and I saved 25W at the wall between the 2 cards using 1.138v. Not much but across 5-6 270s it adds up.
 
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