I have an AMD 6870 CF setup using the latest drivers off AMD's website at this time 12.4, and I am running BOINC 7.0.25 I saw the 6870 isnt listed in the double precision cards, but I have found many websites out there that say this card does support double precision.
this website says
"Either way, the bulk of a HD 6870 1GB looks very familiar to anyone who knows their ATI hardware – there’s a huge bank of SIMD (Single Instruction, Multiple Data) engines with 80 stream processors each. These stream processors follow the VLIW5 (Very Long Instruction Word, 5:1 ratio) configuration of having a super stream processor for every five basic units, with this unit capable of double-precision floating point operations and other high-precision maths."
http://www.bit-tech.net/hardware/graphics/2010/10/22/ati-radeon-hd-6870-review/2
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I have an AMD 6870 CF setup using the latest drivers off AMD's website at this time 12.4, and I am running BOINC 7.0.25 I saw the 6870 isnt listed in the double precision cards, but I have found many websites out there that say this card does support double precision.
this website says
"Either way, the bulk of a HD 6870 1GB looks very familiar to anyone who knows their ATI hardware – there’s a huge bank of SIMD (Single Instruction, Multiple Data) engines with 80 stream processors each. These stream processors follow the VLIW5 (Very Long Instruction Word, 5:1 ratio) configuration of having a super stream processor for every five basic units, with this unit capable of double-precision floating point operations and other high-precision maths."
http://www.bit-tech.net/hardware/graphics/2010/10/22/ati-radeon-hd-6870-review/2
Nope that card does not have double precision capability. If it was a 5870 it would, but AMD changed the DP qualifications to only the 69xx series.
The 7xxx series has DP across the board so far, but the 77xx and 78xx only has 1/16th DP as opposed to the 1/4th of the 79xx series.
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I have an AMD 6870 CF setup using the latest drivers off AMD's website at this time 12.4, and I am running BOINC 7.0.25 I saw the 6870 isnt listed in the double precision cards, but I have found many websites out there that say this card does support double precision.
this website says
"Either way, the bulk of a HD 6870 1GB looks very familiar to anyone who knows their ATI hardware – there’s a huge bank of SIMD (Single Instruction, Multiple Data) engines with 80 stream processors each. These stream processors follow the VLIW5 (Very Long Instruction Word, 5:1 ratio) configuration of having a super stream processor for every five basic units, with this unit capable of double-precision floating point operations and other high-precision maths."
http://www.bit-tech.net/hardware/graphics/2010/10/22/ati-radeon-hd-6870-review/2
According to my local pc store AMD went thru and relabeled all of their 5xxx series cards to 6xxx series cards, even those already shipped! That means that SOME 6870's WERE DP because they were in fact just relabeled 5870's. BUT all NEWLY made 6870's do not have DP, seems silly to me too!
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You should not trust your local store because they seem to be incompetent. The 5700 series and downwards have been relabeled. I am sure they do not advise you to buy AMD products in general either.
By the way, wouldn't it be possible to pass some of the work to a SPFP GPU?
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I agree with Antoine, there is no way they relabeled the 5870 into 6870.
Even the 67xx which are known to share the same chip with 57xx aren't just relabeled, but are actually different cards, though the difference is very small.
And yes, the local stores do hire often incompetent people. I always know more about the product that I buy, than the guy which is selling it to me.
Try this, it's one of my favorite articles:
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units
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I agree with Antoine, there is no way they relabeled the 5870 into 6870.
Even the 67xx which are known to share the same chip with 57xx aren't just relabeled, but are actually different cards, though the difference is very small.
And yes, the local stores do hire often incompetent people. I always know more about the product that I buy, than the guy which is selling it to me.
Try this, it's one of my favorite articles:
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units
Thanks guys
I saw this on the chart:
Radeon HD 5770 Juniper XT 850 1200 800:40:16 13.6 34 76.8 1360 18 108 12.59 Oct 13, 2009
Radeon HD 6770[64] Juniper XT 850 1200 800:40:16 13.6 34 76.8 1360 18 108 12.59 Apr 28, 2011 (retail)
Other than the release dates they seem identical to me, my 5770's work just fine in 64 bit environments but I guess the newer one could be native 64bit built in.
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