Monday, September 27th 2010

AMD Radeon HD 6700 Series ''Barts'' Specs Sheet Surfaces

Here is the slide we've been waiting for, the specs sheet of AMD's next-generation Radeon HD 6700 series GPUs, based on a new, radically redesigned core, codenamed "Barts". The XT variant denotes Radeon HD 6770, and Pro denotes HD 6750. AMD claims that the HD 6700 series will pack "Twice the Horsepower", over previous generation HD 5700 series. Compared to the "Juniper" die that went into making the Radeon HD 5700 series, Barts features twice the memory bandwidth thanks to its 256-bit wide high-speed memory interface, key components such as the SIMD arrays split into two blocks (like on Cypress), and we're now getting to learn that it uses a more efficient 4-D stream processor design. There are 1280 stream processors available to the HD 6770 (Barts XT), and 1120 stream processors to the HD 6750 (Barts Pro). Both SKUs use the full 256-bit memory bus width.

The most interesting specification here is the shader compute power. Barts XT churns out 2.3 TFLOP/s with 1280 stream processors, GPU clocked at 900 MHz, while the Radeon HD 5870 manages 2.72 TFLOP/s with 1600 stream processors, 850 MHz. So indeed the redesigned SIMD core is working its magic. Z/Stencil performance also shot up more than 100% over the Radeon HD 5700 series. Both the HD 6770 and HD 6750 will be equipped with 5 GT/s memory chips, at least on the reference-design cards, which are technically capable of running at 1250 MHz (5 GHz effective), though are clocked at 1050 MHz (4.20 GHz effective) on HD 6770, and 1000 MHz (4 GHz effective) on HD 6750. Although these design changes will inevitably result in a larger die compared to Juniper, it could still be smaller than Cypress, and hence, more energy-efficient.

Source: PCinLife
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245 Comments on AMD Radeon HD 6700 Series ''Barts'' Specs Sheet Surfaces

#1
wahdangun
CDdude55 said:
But isn't that what everyone is doing in this thread?, every other post is speculation or what they would like to see, when someone pointed out the shitty drivers ATI/AMD uses and it's a fact form what people are saying, then that's just the truth, big deal. Are you that much of ''fan'' that as soon as anyone mentions a competitors name in a an AMD thread you assume it's a fanboy trying to derail from your ''fun''?:confused:
no i'm not fan of either side, i even build several computer with nvdia, but its hard to follow this thread if someone keep derailing this thread and debate in here without having any relation, and yes they will be ruined my "fun"
Posted on Reply
#2
CDdude55
Crazy 4 TPU!!!
wahdangun said:
no i'm not fan of either side, i even build several computer with nvdia, but its hard to follow this thread if someone keep derailing this thread and debate in here without having any relation, and yes they will be ruined my "fun"
I see what you're saying and i agree, but that ''fun'' is the same thing you're complaining about, everyone is speculating and pushing out rumor talk and if that's the case and you consider it not fun and ''derailified'' lol, then this thread has been derailed for a while now.
Posted on Reply
#3
roast
I'm liking these specs. Time to move out of the green camp. ;)
Posted on Reply
#4
bear jesus
roast said:
I'm liking these specs. Time to move out of the green camp. ;)
With 2 g285's are you sure you would not rather wait and see the amd 6870 caymen spec? :D

I can't help but keep bringing it up, yes i know the barts spec's are looking very nice but it is still the caymen chip that has me the most excited as it is the chip that could stop me buying a pair of gtx460's.
Posted on Reply
#5
CDdude55
Crazy 4 TPU!!!
bear jesus said:
With 2 g285's are you sure you would not rather wait and see the amd 6870 caymen spec? :D

I can't help but keep bringing it up, yes i know the barts spec's are looking very nice but it is still the caymen chip that has me the most excited as it is the chip that could stop me buying a pair of gtx460's.
Agreed.

If you're impressed by barts then caymen should be monstrous. Just hope it's decently priced.
Posted on Reply
#6
bear jesus
CDdude55 said:
Just hope it's decently priced.
I admit if it is powerful enough i would not mind too much paying a reasonably expensive price but i admit i would not be too happy if it was a $600 card, as far as i'm concerned the days of paying that much for a single chip gpu should be well and dead.
Posted on Reply
#7
mdsx1950
I wouldn't mind paying a $1000 for a single GPU card if it can perform atleast a 20% more than the HD 5970.
Posted on Reply
#8
WarEagleAU
Bird of Prey
The 6770 and 6750 wont be their high end will it?
Posted on Reply
#9
bear jesus
mdsx1950 said:
I wouldn't mind paying a $1000 for a single GPU card if it can perform atleast a 20% more than the HD 5970.
To be honest in that situation i would rather it perfrom 20% faster than the 5970's thats have the same clocks as the 5870, if they had perfect 100% scaling and be a 2gb card that could easly clock to 1ghz core speed but i would not really want to pay over $800..... ok that's enough dreaming for now :laugh:
Posted on Reply
#10
CDdude55
Crazy 4 TPU!!!
mdsx1950 said:
I wouldn't mind paying a $1000 for a single GPU card if it can perform atleast a 20% more than the HD 5970.
That's insane lol.

It's inevitable that we will get single GPU cards that will beat out a 5970, that's the way of technology, but i sure as well wouldn't pay $1000 for it.

Then again if you're rich and can spend that kind of money on hardware, then have at it. I'll be going with whatever is below that card more likely. lol
Posted on Reply
#11
jaredpace
EastCoasthandle said:
I would like for him to point out and quote specifically the portion of both pics that shows a bart as a 6800 series...
:banghead:
Posted on Reply
#13
erocker
I think the only official looking anything from AMD says these cards are the 6750 and 6770. Look at the chart in the first post. All of these websites claim all this other information with no sources. Either way, I could care less what they are called.
Posted on Reply
#14
bear jesus
erocker said:
I think the only official looking anything from AMD says these cards are the 6750 and 6770. Look at the chart in the first post. All of these websites claim all this other information with no sources. Either way, I could care less what they are called.
Ok i admit you are right, really it should not matter what they call them and the only minor concern is people thinking a 6870 beats a 5970 but i geuss i should not worry as i would not be one of those people.
Posted on Reply
#15
cheezburger
cayman xt won't be double up from barts, which will continue the current speculation of 1920:96:64 512bit bus, not previously thought to be 2560:128:64 configuration that's double up from barts. consider the die size will be incredibly huge if the ALU is 640.
Posted on Reply
#16
BondExtreme
Can't wait to see the prices on the 6k series. I can almost be sure though it will be better than Nvidia's new series. But I am not going to say that as a fact. Yet.;)
Posted on Reply
#17
cheezburger
erocker said:
Wonderful. I thanks for stating the same thing over and over again. Of course, most people think you're wrong.
then bring some evidence to prove me wrong :D and how many people think i'm wrong???o_0

because cayaman will still be 32rops and 256bit bus?

so much of 1920:120:32 or 2560:128:"32" + 256biy bus + 7GT GDDR5 ram :D unless amd just want to make mainstream card only but that'll be different story.

let me tell you something about bus currently both NV and amd are using 32bit bus per ring which on 512bit(2900xt, gtx280) it will need 16 ram ic to maintain the hard wiring on PCB layout design...however if they can tweak the ping bus size from 32bit to 64 bit per ring then here we go...a 512bit bus.

erocker said:
Wonderful. I thanks for stating the same thing over and over again. Of course, most people think you're wrong. *Bringing evidence against speculation will happen when AMD makes formal announcements. :rolleyes: You don't need to "tell" me anything. Keep dreaming though if it makes you happy.
i'd like to wait for that announcement as well :D which how much you want to bet for cayman's official specification? :D
Posted on Reply
#18
erocker
Sounds great. I'll wait for launch. Enjoy your speculation. :toast:
Posted on Reply
#19
btarunr
Editor & Senior Moderator
cheezburger said:
cayman xt won't be double up from barts, which will continue the current speculation of 1920:96:64 512bit bus, not previously thought to be 2560:128:64 configuration that's double up from barts. consider the die size will be incredibly huge if the ALU is 640.
AMD will not use a 512-bit wide memory interface. Wanna bet?
Posted on Reply
#20
1badtechdude
OMG the 6770 is sweet, I think I found an upgrade to my 8800! VERY thankful I skipped the current gen cards. Now AMD just has to stop releasing a new gen every damn year!
Posted on Reply
#21
btarunr
Editor & Senior Moderator
1badtechdude said:
OMG the 6770 is sweet, I think I found an upgrade to my 8800! VERY thankful I skipped the current gen cards. Now AMD just has to stop releasing a new gen every damn year!
It has become cozy with that. Autumn-Winter time is new AMD GPU time. Spring-Summer time is new NVIDIA GPU time.
Posted on Reply
#22
erocker
btarunr said:
AMD will not use a 512-bit wide memory interface. Wanna bet?
He gets my GT 240 if it does have a 512-bit bus. That's a promise... and if he/she wants it. :)
Posted on Reply
#23
btarunr
Editor & Senior Moderator
erocker said:
He gets my GT 240 if it does have a 512-bit bus. That's a promise... and if he/she wants it. :)
What do I get if it doesn't?

Posted on Reply
#24
erocker
My GT 240.. if you want it. If you don't want it, you get a sense of satisfaction spurred by common sense. :D
Posted on Reply
#25
Dj-ElectriC
wait... HD6770 = 1280SP, HD6970 = oh god....
Posted on Reply
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