Friday, September 10th 2010

AMD ''Barts'' XT Prototype Pictured

After recent photo exposés of the Cayman XT (Radeon HD 5870 successor) and Caicos (Radeon HD 5400 series successor), the third, juicy set of pictures exposes the XT variant of Barts reference board (Radeon HD 5770 successor), which will likely go on to become Radeon HD 6770.

While the specifications of the GPU are not known, what we can tell from the pictures is that the card is powered by two 6-pin power connectors, uses 4+1 phase digital PWM circuitry, and looks to have a 256-bit wide memory interface for a near 80~100% increase in memory bandwidth compared to the previous generation. Display outputs include two DVI, one HDMI, and two mini-DisplayPort. There is one CrossFire connector for 2-way CrossFire support. AMD will kickstart its next-generation Radeon graphics series launches later this year. Don't mind the puny looking GPU-cooler, AMD uses it on prototypes. The actual cooler's outline is drawn on the PCB.


Source: ChipHell
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54 Comments on AMD ''Barts'' XT Prototype Pictured

#2
inferKNOX
by: wiak
might just be FUD as we know ;)
i do not think it will change, wasnt there some talk about this exacly thing when 4870 was released?

dont belive everything you read online kids
99.99% of it is a lie, and the rest is cake!
+1

If it indeed turns out to be true though, AMD has already done something very stupid on the very first cards branded "AMD"!:shadedshu
Posted on Reply
#3
Steevo
The nail in the coffin of the Fermi?
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#5
Lionheart
I seriously hope they dont fuk with the naming scheme of these new cards :(
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#6
largon
by: CrystalKing
This is Barts XT, named HD6870
This is "HD6770".
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#7
cheezburger
by: JATownes
I WANT SPECS!!! :cry:
core config: 640:40:32 and 256bit bus, shader is 4D rather than r600's 5D and texture map unit is the same as 5770 but rops increase from 16 to 32. i believe this is actual design that trying to grab back mid range market from GTX 460

by: RONX GT
Barts XT may be the upcoming 6750 or 6770.
And 6770's specs may be somewhat similar to 5770(according to Wikipedia)

http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units

http://www.3dcenter.org/news/2010-08-26
only similar in shader core number, the rest is complete change.
Posted on Reply
#8
JATownes
by: cheezburger
core config: 640:40:32 and 256bit bus, shader is 4D rather than r600's 5D and texture map unit is the same as 5770 but rops increase from 16 to 32. i believe this is actual design that trying to grab back mid range market from GTX 460
Source?
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#9
pantherx12
by: cheezburger
core config: 640:40:32 and 256bit bus, shader is 4D rather than r600's 5D and texture map unit is the same as 5770 but rops increase from 16 to 32. i believe this is actual design that trying to grab back mid range market from GTX 460
if that's true, the 6770 should have quite a nice performance bump from the 5770.

30-35% at a push, what do you think?
Posted on Reply
#10
overclocking101
well spank my ass and call me a bitch! im starting to think amd does these "leaks" on purpose. when we wanted fermi info all we had was speculation no leaked pics nada, but hd5XXX and hd6XXX info is plentiful. i think its on purpose
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#11
cheezburger
by: JATownes
Source?
fudzilla and semiaccurate but since it's close to NDA i think these source had been locked already

by: pantherx12
if that's true, the 6770 should have quite a nice performance bump from the 5770.

30-35% at a push, what do you think?
it is estimate to be only 5% less than 5850
Posted on Reply
#12
JATownes
by: pantherx12
if that's true, the 6770 should have quite a nice performance bump from the 5770.

30-35% at a push, what do you think?
Agreed. I think the HD6000 are going to be a great performance boost, and a nice testing bed for some of the Northern Islands tech. I just hope the specs are true.

by: overclocking101
well spank my ass and call me a bitch! im starting to think amd does these "leaks" on purpose. when we wanted fermi info all we had was speculation no leaked pics nada, but hd5XXX and hd6XXX info is plentiful. i think its on purpose
Definately going to have to sig this. :D

by: cheezburger
fudzilla and semiaccurate but since it's close to NDA i think these source had been locked already
IDK if I consider FUD & Semi as reputable sources...but thanks for the info none the less. Hopefully it is (semi)accurate. :)
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#13
cadaveca
My name is Dave
by: overclocking101
well spank my ass and call me a bitch! im starting to think amd does these "leaks" on purpose. when we wanted fermi info all we had was speculation no leaked pics nada, but hd5XXX and hd6XXX info is plentiful. i think its on purpose
Of course it's on purpose!

Cards are shipping out now to OEMs, etc, so they give out info beforehand, almost ALWAYS!


Problem comes in when someone knows cards are going out, then trys to get some extra traffic with made-up stories!
Posted on Reply
#14
bear jesus
I love the idea of puting the vrm's on the other side of the core, i have a 4870 and vrm temp is one of the major reasons i removed the stock cooler but i have high hopes for this new layout really improving the vrm temp.

I would be even more happy if the 6870 had a vapour chamber that covered the vrm's... maybe even one that covers the core, memory and vrm's with fins covering the full length of it like the 5970 but copper.... i am hoping for too much.
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#15
Rebelstar
All I want is to see 68XX/69XX pics and specs finally.
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#16
overclocking101
i think the vrms in the back is sheer genious, in the past they have always been primarily in the fron underneath the fan making little to no airflow thus running hot. even with the heated are from the core blowing over them they should keep much cooler. now with this cards specs if it allows software voltage control then this card is equipped to be a powerhouse, lets hope they slam good memory on it that clocks up to 1500mhz and this may be enough to make me switch back to the red team
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#17
KainXS
by: Rebelstar
All I want is to see 68XX/69XX pics and specs finally.
I kno right we can sit here and speculate all we want but almost everything we know right now isn't solid.
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#18
CrystalKing
by: largon
This is "HD6770".
hd6000 has a new name to replace old

HD6990, dual core, replace HD5970
HD6970, Cayman XT, replace HD5870
HD6950, Cayman Pro, replace HD5850
HD6870, Barts XT
HD6850, Barts Pro, these two replace HD5830 to against GTX460 1G/768MB
HD6770 and HD6750 still use Juniper XT and Juniper LE chip

Perhaps it's not the final name, but it's the latest at least.:)

Source:Chiphell/nApoloen
Posted on Reply
#19
largon
Oh, wasn't aware of AMD's marketing dept. has finally lost last shreds of sanity.
*shrug*
by: btarunr
While the specifications of the GPU are not known, what we can tell from the pictures is that the card is powered by two 6-pin power connectors, uses 4+1 phase digital PWM circuitry (...)
And from the same pics I can tell the VRM are not "digital" (ie. Volterra), instead they use DrMOS and the config is atleast 4+1+1 or possibly 4+1+1+1.
Posted on Reply
#20
Semi-Lobster
If we're confused, just think about hoe the average consumer is going to feel who knows less about computers than we do! Hopefully these 2 6pins are just for testing because having 2 would indicate a pretty large power consumption which would mean 'Turks' (6500 series) is going to be the 'new' mainstream and it seems the 6700 series is going to be pretty power (and power consuming) seeing where the numbers for the 6700 series is going
Posted on Reply
#21
halfwaythere
This is a tessellation reworked Cypress and ultimately a Cypress successor. Turks is going to be the Juniper successor keeping the same bus width and GDDR5. Cayman is probably going to be the only chip with a real NI flavor since it's going after the GF100 while Barts is most likely a GF104 killer.
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#22
cheezburger
by: CrystalKing
hd6000 has a new name to replace old

HD6990, dual core, replace HD5970
HD6970, Cayman XT, replace HD5870
HD6950, Cayman Pro, replace HD5850
HD6870, Barts XT
HD6850, Barts Pro, these two replace HD5830 to against GTX460 1G/768MB
HD6770 and HD6750 still use Juniper XT and Juniper LE chip

Perhaps it's not the final name, but it's the latest at least.:)

Source:Chiphell/nApoloen
it was proved to be hoax.
Posted on Reply
#23
_JP_
*Looks at the pics btarunr posted*
*Looks at his HD 5770*
WTF? :wtf:
The cooler looks similar...other than that...
FUD or not, in that pic they haven't got rid of the nasty DVI connector on the 2nd expansion bracket. Instead of two DPs, why not one DVI, save the DPs for eyefinity...better cooling for the extractor type coolers...
And 1 CF connector? :confused:
Posted on Reply
#24
WarEagleAU
Bird of Prey
Looking forward to seeing the 5870 Version.
Posted on Reply
#25
btarunr
Editor & Senior Moderator
by: largon
And from the same pics I can tell the VRM are not "digital" (ie. Volterra), instead they use DrMOS and the config is atleast 4+1+1 or possibly 4+1+1+1.
I didn't count uncore, so yeah, 4+1+1. From this distance those chokes do look like Cooperbussmann single-phase PWM.

by: cheezburger
it was proved to be hoax.
They weren't 'proven' to be anything (hoax/not hoax).
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