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Upcoming Radeon HD 6000 Series Is All-New Architecture

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RussianSensation

Elite Member
Sep 5, 2003
19,458
761
126
Now that it is all but confirmed the 6770 coming out next month is 256 bit.
Source????

HD6770 may in fact just be a rebadged HD5770 (perhaps with tweaked clocks). HD6770 not 6770 (which is a codename for a Barts XT, HD6870) is coming out next month. Latest rumours indicate that higher end cards (i.e., 6870/6970, etc.) won't launch until November, December or even in 2011.

I am pretty sure you are confusing 6870 with 6770 with every post you make unless you have a credible link which proves that HD6770 is in fact 256-bit?
 

Skurge

Diamond Member
Aug 17, 2009
5,195
0
71
Source????

HD6770 may in fact just be a rebadged HD5770 (perhaps with tweaked clocks). HD6770 not 6770 (which is a codename for a Barts XT, HD6870) is coming out next month.

I am pretty sure you are confusing 6870 with 6770 with every post you make unless you have a credible link which proves that HD6770 is in fact 256-bit?
I seriously doubt that would happen, maybe rebadged it as 6670 or something. Renaming it as a 6770 would be shooting themselves in the foot.
 

RussianSensation

Elite Member
Sep 5, 2003
19,458
761
126
I seriously doubt that would happen, maybe rebadged it as 6670 or something. Renaming it as a 6770 would be shooting themselves in the foot.
Hheeh I know, but they've done it before.

Radeon 7500 = shrink of Radeon 1
Radeon 9100 = 8500
Radeon 9000 = 9200/9250

I sure hope they don't rebadge. This is the perfect time to continue their domination over NV.
 

GaiaHunter

Diamond Member
Jul 13, 2008
3,606
134
106
Source????

HD6770 may in fact just be a rebadged HD5770 (perhaps with tweaked clocks). HD6770 not 6770 (which is a codename for a Barts XT, HD6870) is coming out next month. Latest rumours indicate that higher end cards (i.e., 6870/6970, etc.) won't launch until November, December or even in 2011.

I am pretty sure you are confusing 6870 with 6770 with every post you make unless you have a credible link which proves that HD6770 is in fact 256-bit?
Barts XT, be it called 6770 or 6870 is still a mid-range card though.
 

Tempered81

Diamond Member
Jan 29, 2007
6,374
0
76
a 5770 is about the speed of a 4870, so why cant the 6770 be about the speed of a 5870? i'm talking about juniper, rv770, barts and cypress
 

MrK6

Diamond Member
Aug 9, 2004
4,458
3
81
a 5770 is about the speed of a 4870, so why cant the 6770 be about the speed of a 5870? i'm talking about juniper, rv770, barts and cypress
It's difficult to double performance like that without a process shrink, but that doesn't mean they're keeping the mid range as far from the high-end as they did with the 5xxx series. It seems like a lot of effort went into these chips' redesign once 28nm was delayed, but it's not going to make up for the deficit that staying on the same process creates. Therefore, I'm guessing AMD might make a "beefier" mid range GPU to capture that market segment. Using the rumor mill, if Cayman is 3/4 of what it was supposed to be, due to having to stay on 40nm, and Barts is supposedly 2/3 of Cayman, well, that does put it at 1/2 of Cayman's theoretical 28nm performance. It seems like only Cayman took the performance hit here and not Barts, as the 5770 was ~ 1/2 the speed of the 5870 and about as fast as the 4870. Also crunching numbers, if Cayman is 480SP's and Barts is 2/3 of that, we're back at 320SP, same as Cypress. Performance is of course going to depend on how this new architecture is tweaked and clock speeds, but I think Barts being close to 5870 performance is not a dream.
 

Kenmitch

Diamond Member
Oct 10, 1999
8,504
2,245
136
It's difficult to double performance like that without a process shrink, but that doesn't mean they're keeping the mid range as far from the high-end as they did with the 5xxx series. It seems like a lot of effort went into these chips' redesign once 28nm was delayed, but it's not going to make up for the deficit that staying on the same process creates. Therefore, I'm guessing AMD might make a "beefier" mid range GPU to capture that market segment. Using the rumor mill, if Cayman is 3/4 of what it was supposed to be, due to having to stay on 40nm, and Barts is supposedly 2/3 of Cayman, well, that does put it at 1/2 of Cayman's theoretical 28nm performance. It seems like only Cayman took the performance hit here and not Barts, as the 5770 was ~ 1/2 the speed of the 5870 and about as fast as the 4870. Also crunching numbers, if Cayman is 480SP's and Barts is 2/3 of that, we're back at 320SP, same as Cypress. Performance is of course going to depend on how this new architecture is tweaked and clock speeds, but I think Barts being close to 5870 performance is not a dream.
When I look back I'm thinking that originally AMD's next generation was designed for the 32nm node wasn't it? That is untill it was decided that 32nm node was just gonna be skipped by TSMC due to problems....But then again I have been questioned on my memory lately :)

If that's the case it seems like it wouldn't be to hard to backpeddle a node without a huge increase in die size....Well at least easier than 28nm -> 40nm
 

RussianSensation

Elite Member
Sep 5, 2003
19,458
761
126
a 5770 is about the speed of a 4870, so why cant the 6770 be about the speed of a 5870?
We still don't know what the difference is between HD6770 and HD6870 at this point. The rumours are extremely confusing/misaligned.

1) Some people say that 6770 performed so good, that it will be relabelled as HD6870.

2) Others say that HD6770 will be just a rebadged HD5770.

3) Then again, other sources even point that the Barts PRO (HD6750) and Barts XT (HD6770) will take on NVIDIA's GeForce GTX 460 768MB and GeForce GTX 460 1GB, respectively.

With so much conflicting information, it's impossible to say for sure.

However, I am still personally of the view that HD6770 is the replacement for HD5770 card (i.e., mid-range), while HD6870 will rather replace the HD5850 (mid-high end).
 

Grooveriding

Diamond Member
Dec 25, 2008
9,082
1,224
126
Are there any estimates on who is going to start producing 28nm first, Global Foundries or TSMC ?

I'm curious if one or the other is going to give an advance lead in producing these chips to their customers.
 

HurleyBird

Platinum Member
Apr 22, 2003
2,374
791
136
but it's not going to make up for the deficit that staying on the same process creates.
That being said, G10 and G80 were also on the same 90nm node, and that was the single greatest increase in graphics performance ever. Doubt AMD will want to make a die that big in order to shoot for that kind of performance gain though.
 

dangerman1337

Senior member
Sep 16, 2010
314
0
76
It's difficult to double performance like that without a process shrink, but that doesn't mean they're keeping the mid range as far from the high-end as they did with the 5xxx series. It seems like a lot of effort went into these chips' redesign once 28nm was delayed, but it's not going to make up for the deficit that staying on the same process creates. Therefore, I'm guessing AMD might make a "beefier" mid range GPU to capture that market segment. Using the rumor mill, if Cayman is 3/4 of what it was supposed to be, due to having to stay on 40nm, and Barts is supposedly 2/3 of Cayman, well, that does put it at 1/2 of Cayman's theoretical 28nm performance. It seems like only Cayman took the performance hit here and not Barts, as the 5770 was ~ 1/2 the speed of the 5870 and about as fast as the 4870. Also crunching numbers, if Cayman is 480SP's and Barts is 2/3 of that, we're back at 320SP, same as Cypress. Performance is of course going to depend on how this new architecture is tweaked and clock speeds, but I think Barts being close to 5870 performance is not a dream.
It all depends if this rumor is true and Bart's die size really, if Barts is aroudn 200mmsquared to 250 and it is a totally new arch i could see it being at least as good as the 5850.
 

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