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Author Topic: What's the latest on 7xxx series from radeon?  (Read 9582 times)
m3sSh3aD
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September 06, 2011, 07:32:19 PM
 #81

how the hell you got that I don't want to bet I don't know. read...
for your purpose its on, at stock, no oc as someone else who can't read above commented. what you said stock is, its got to double that for 2 btc, and if.it lands at less than £240 you've got.yourself 4 btc. anyone got a release date?

You misunderstand my posts and you think I am claiming that "the 7xxx successor to the 5850 will overclock just like my freak 5850 by +38% and will achieve 800 Mhash/s and will be priced at <240 GBP". This is wrong. Read again: the predictions I am making are https://bitcointalk.org/index.php?topic=32215.msg505289#msg505289 IOW Mhash/Joule at stock clock and voltage and nothing else. This is the post I want you to reply to, and you are ignoring it a 2nd time.

Your on, 3.61 mhash/joule. Although you did say double. And that 1.85, which last time i checked wasnt double Smiley September NEXT year, whats that for, just incase it needs a revamp, And im talking the 7950 SPECIFICALLY, that one, the one that may have the new design if whats been posted is to be believed Smiley Just the initial release cards. YOur confident in your maths and i hope your right. Thats 2 BTC, if the 7950 can be found for £240 or less on release, thats the other 2 BTC. Got ya, understood, and give you .15 leaway Smiley

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September 07, 2011, 02:56:09 AM
 #82

1.85 -> A fair 15% error margin.
7950 -> No. I made a prediction NOT on this specific card, but on the 7xxx series as a whole, which you contested, therefore that's what I am betting on. It seems you once again misunderstood me (feel free to reject the bet then).
m3sSh3aD
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September 07, 2011, 09:18:21 AM
 #83

1.85 -> A fair 15% error margin.
7950 -> No. I made a prediction NOT on this specific card, but on the 7xxx series as a whole, which you contested, therefore that's what I am betting on. It seems you once again misunderstood me (feel free to reject the bet then).

I did understand you. You've changed the origional statement that i said though a fair bit now. I live in the real world and my point was i wanted to see 800mhash out of the 7950 BEFORE i would even upgrade my current hardware Smiley Well, 700 would be temting if its £240 and below. Your using excape goats by including the 78XX & 77XX series which are low power units which will be more optimised to be extreamly power efficent. 28nm is getting REALLY close to them quantum effects and the gains arent going be as straight forward as they've been in the past.

Im not betting 4BTC on your bet, as you will get a 7XXX card under £240 Smiley Its 2BTC and ill do that over the whole range of 7XXX series and give you your 15% leyway too. Never been so hard make a bet. Its usually ok, done. Not constructing it into something else haha. My bet was specificly 7950 and you've made it wider than pavorrotti after a all you can eat buffett!!! haha Smiley
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September 09, 2011, 04:38:15 PM
 #84

We know the watts now....

7850 - 1408 Core - 90W
7870 - 1536 Core - 120W
7950 - 1920 Core - 150W
7970 - 2048 Core - 190W

do your math Wink
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September 11, 2011, 07:29:54 AM
 #85

can't wait using HD 7950 as mining rigs  Cheesy
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September 12, 2011, 05:56:53 PM
 #86

We know the watts now....

7850 - 1408 Core - 90W
7870 - 1536 Core - 120W
7950 - 1920 Core - 150W
7970 - 2048 Core - 190W

do your math Wink

Isn't the math something like (Stream Processors/4) + 50 = MH/s or something along those lines?  So with 1408 SPs @ 90w would be about 402 MH/s.  That's a pretty good hash per watt ratio.

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September 12, 2011, 09:50:00 PM
 #87

We know the watts now....

7850 - 1408 Core - 90W
7870 - 1536 Core - 120W
7950 - 1920 Core - 150W
7970 - 2048 Core - 190W

do your math Wink

Isn't the math something like (Stream Processors/4) + 50 = MH/s or something along those lines?  So with 1408 SPs @ 90w would be about 402 MH/s.  That's a pretty good hash per watt ratio.
it's clock * AlUs / number ops for mining.  there's a few other posts regarding 7xxx series that does the estimated match for hashing. 1G+ expected for the 7990 card.

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m3sSh3aD
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September 13, 2011, 05:13:38 PM
 #88

it's clock * AlUs / number ops for mining.  there's a few other posts regarding 7xxx series that does the estimated match for hashing. 1G+ expected for the 7990 card.

The 7850 is rather interesting if the specs are right.  @ 3450 ops per hash (what I currently get on 6950) it would get 350MHash/s.  Now that isn't exiting but @ 90W that is ~3.9Mhash/W (only a FPGA would be higher).  Also AMD cards tend to consume less power than TDP even @ peak load so maybe you get over 4MHash/W.  With 90W per card one could build a 7 card open air-rig for on a 700W powersupply and get ~2.5GH/s in one system and very good efficiency.  At current difficulty 3.9Mhash/W works out to a cost of $1.27 per BTC (@ $0.10 electrical cost).

Now pricing remains to be seen but 7850 is an entry level card and *usually* those cards target the $140-$160 market segment.

I leave for india end december so looks like my rigs will have to be these 7850's rather than the 7950's but as been said, I dont thiink thats going be a problem with me. Beats paying over £200+ for 1200W PSU's too Smiley
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September 14, 2011, 10:39:54 AM
 #89

We know the watts now....

7850 - 1408 Core - 90W
7870 - 1536 Core - 120W
7950 - 1920 Core - 150W
7970 - 2048 Core - 190W

do your math Wink

Wattage was already known, see: https://bitcointalk.org/index.php?topic=32215.msg506316#msg506316
I already did the math, see: https://bitcointalk.org/index.php?topic=32215.msg507287#msg507287
All these are previous messages in this thread that you apparently didn't bother to read...

You only recently realized in his post of yours that 40nm -> 28nm will increase die density by 2x, which explains why you had such a hard time understanding that performance will double (perf and power are linearly related to transistor density).

I don't know why I continue wasting my time arguing with you Roll Eyes I have done my best to educate you. This is my last post in this thread...
m3sSh3aD
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September 14, 2011, 02:14:09 PM
 #90

Take it you dont want the coins if its true then. I get it, Got it, but until i see the real product it aint a won bet. Im going get a couple 7850's when there released as it looks like a sweet card at 90W as the 7950's wont be here until next year, which im away until march Smiley
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September 14, 2011, 03:02:17 PM
 #91

More info today on TomsHardware.com: http://www.tomshardware.com/news/amd-HD-7900-XDR2-Rambus-Memory,13408.html

If this post tickles your fancy or helped you make more bitcoin I'll gladly take a tip:
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mikeo
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September 14, 2011, 08:09:42 PM
 #92

Yep. The 7850 is starting to look good at 1408 cu and 90 watts.

If this post tickles your fancy or helped you make more bitcoin I'll gladly take a tip:
17DWhv9f5TkRDL6kyA45qiG34d4v1QiwqE
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September 16, 2011, 10:29:20 PM
 #93

I know something that will really help you about the HD7990.It will have 6400 shaders instead of 3072 for HD6990.HD7990 will also use only 300W max of power at full load whereas HD6990 would use up to 450W (esp in uber mode which is what you'd probably use for mining),the tech appears to be 28nm.There will be 6GB VRAm as opposed to 4GB VRAM now on HD6990 (irrelevant for mining though)

I honestly think that the HD7990 will sell well esp for us miners/gamers.As a film editor/maker,I also make use of powerful GPUs  for processing jobs as well when i'm not mining.

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September 16, 2011, 11:08:14 PM
 #94

I know something that will really help you about the HD7990.It will have 6400 shaders instead of 3072 for HD6990.HD7990 will also use only 300W max of power at full load whereas HD6990 would use up to 450W (esp in uber mode which is what you'd probably use for mining),the tech appears to be 28nm.There will be 6GB VRAm as opposed to 4GB VRAM now on HD6990 (irrelevant for mining though)

Sauce?

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September 17, 2011, 07:17:01 AM
 #95

I know something that will really help you about the HD7990.It will have 6400 shaders instead of 3072 for HD6990.HD7990 will also use only 300W max of power at full load whereas HD6990 would use up to 450W (esp in uber mode which is what you'd probably use for mining),the tech appears to be 28nm.There will be 6GB VRAm as opposed to 4GB VRAM now on HD6990 (irrelevant for mining though)

Honestly I think you are talking out your ass because nothing is even plausible in your post.

http://lenzfire.com/2011/09/amd-radeon-hd-7000-series-graphic-card-details-exposed-40795/2/

1) The 7990 will almost certainly be 2x downclocked 7970s.  7970 has 2048 cores so 7990 would have two of them for 4096 cores combined.  Unless AMD plans to break tradition (and proven profitable track record for 4 generations of graphics cards) and put   3 and 1/8 GPU in the 7990 it won't have 6400 cores.

2) The HD 6990 doesn't draw 450W.  NO graphics card draws 450W because the PCIe limit is 375W.   75W from the bus.  75W from 6pin connector, 150W from 8pin connector.  The 6690 has 1 6pin & 1 8pin making max draw 300W.  Even heavily overclocked actual draw is ~260W.

Granted a lot is unknown or rumor but at least the rumors are plausible based on what we do know (AMD track record, advantages of die shrink to 28nm, current card performance, etc).




How about this? http://hw-lab.com/specs-for-amd-radeon-hd-7990-disclosed.html
Still think I'm talking out of my ass here?
That shows I'm right about the no of shaders and I was also right about the power use fully.I did say that the HD6990 used up to 450W in uber mode.Please actually read my posts before replying.It is a documeneted FACT that the HD6990 does use up to 450W but only in uber (or Overclocked switch position) mode so how's that wrong,exactly?

Hope this helps you as well mousepotato :-) (with your sauce?)

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September 17, 2011, 10:16:09 AM
 #96

I know something that will really help you about the HD7990.It will have 6400 shaders instead of 3072 for HD6990.HD7990 will also use only 300W max of power at full load whereas HD6990 would use up to 450W (esp in uber mode which is what you'd probably use for mining),the tech appears to be 28nm.There will be 6GB VRAm as opposed to 4GB VRAM now on HD6990 (irrelevant for mining though)

Honestly I think you are talking out your ass because nothing is even plausible in your post.

http://lenzfire.com/2011/09/amd-radeon-hd-7000-series-graphic-card-details-exposed-40795/2/

1) The 7990 will almost certainly be 2x downclocked 7970s.  7970 has 2048 cores so 7990 would have two of them for 4096 cores combined.  Unless AMD plans to break tradition (and proven profitable track record for 4 generations of graphics cards) and put   3 and 1/8 GPU in the 7990 it won't have 6400 cores.

2) The HD 6990 doesn't draw 450W.  NO graphics card draws 450W because the PCIe limit is 375W.   75W from the bus.  75W from 6pin connector, 150W from 8pin connector.  The 6690 has 1 6pin & 1 8pin making max draw 300W.  Even heavily overclocked actual draw is ~260W.

Granted a lot is unknown or rumor but at least the rumors are plausible based on what we do know (AMD track record, advantages of die shrink to 28nm, current card performance, etc).




How about this? http://hw-lab.com/specs-for-amd-radeon-hd-7990-disclosed.html
Still think I'm talking out of my ass here?
That shows I'm right about the no of shaders and I was also right about the power use fully.I did say that the HD6990 used up to 450W in uber mode.Please actually read my posts before replying.It is a documeneted FACT that the HD6990 does use up to 450W but only in uber (or Overclocked switch position) mode so how's that wrong,exactly?

Hope this helps you as well mousepotato :-) (with your sauce?)
you are most certainly talking out of your ass. That is so old that the gtx590 is being previewed. the 6400 is based on 5870 (1600) *2 for die shrink and * 2 for dual gpu.
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September 17, 2011, 04:23:10 PM
 #97

Honestly I think you are talking out your ass because nothing is even plausible in your post.

Speaking of talking out your ass... aren't you the one with the 6850s running at 420 MH/s each?

Been running it two hours now.  Seems solid so far.
Hashrate improved ~1% using cgminer  (840 MHash/s vs 832MHash/s on pair of overclocked & shader-unlocked 6850s).

You're getting 420 MH/s on a 6850?

Yeah.   Well I am running them as 6870s.

The 2GB "reference" 6850 (i.e. turbine cooler and sealed card case) are hard to find now but easily flashed to 6870 (unlocks the full 1536 shaders).   I then overclock them to 940 / 250 ( @ 1.175 VDC).  I can get them to 950 but I usually get a crash once a day and if they don't restart the lost time isn't worth the last 10 Mhz.

420 might be a little high and likely was short term luck.  Over last 24 hours it is closer to 417.

The cheaper 6850 normally can't be pushed that far.  They use lower quality chips and the manufacturer cuts corners on cheaper PCB, heatsinks, fans, etc.  Also non-reference designs push hot air back into case making it hard to get cool inlet air temps. 

I like the 2GB  "reference" 6850 because it is identical to a 6870.  The bad news is AMD seems to have caught on to how easy it is to turn a 6850 into a 6870 and it is getting very hard to find 6850 reference 2GB models in stock.

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September 17, 2011, 05:30:00 PM
 #98

Speaking of talking out your ass... aren't you the one with the 6850s running at 420 MH/s each?

Been running it two hours now.  Seems solid so far.
Hashrate improved ~1% using cgminer  (840 MHash/s vs 832MHash/s on pair of overclocked & shader-unlocked 6850s).

You're getting 420 MH/s on a 6850?

Yeah.   Well I am running them as 6870s.

Replace all the 6850/6870 with 6950 / 6970 and that all makes a lot more sense.

I nearly ordered 6850s instead of 6950s for the same mistake.

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