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[vr-zone] Radeon HD 4870 & 4850 specs out - Page 7

post #61 of 138
Quote:
Originally Posted by OcCam View Post
I thought that 1 gig of ram was useless on a 256-bit bus, Ala: 8800gt 1gb???
Quote:
Quote:
Originally Posted by Delphi View Post
Horray for a teraflop coming out of that bad boy lol, looks to be promissing but somethings need to be increase cough*256bit interface*cough
GDDR5 no need to upgrade the interface. If anyone else says that I'm going to strangle them.
~Proceeds to strangle OcCam!!!~
post #62 of 138
I'm happy to see higher shader clocks. Thats what has been holding ATI back I think, plus they added more TMUs right? Either way this makes me want to save my money for a 4850 at the very LEAST. Interested to see how GDDR5 makes use of that 1GB of RAM

Side note: who the hell still brings up the R600 and its over hyped crap? We all know it didn't start the best but the R670 showed its potential and made a slaughtering of being cheap and great performing just as the 8800GT did/still are.
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post #63 of 138
Quote:
Originally Posted by Lxcivic2k1 View Post
I'm happy to see higher shader clocks. Thats what has been holding ATI back I think, plus they added more TMUs right? Either way this makes me want to save my money for a 4850 at the very LEAST. Interested to see how GDDR5 makes use of that 1GB of RAM

Side note: who the hell still brings up the R600 and its over hyped crap? We all know it didn't start the best but the R670 showed its potential and made a slaughtering of being cheap and great performing just as the 8800GT did/still are.
The 8800GT was only released because the HD3870 came out
post #64 of 138
Quote:
Originally Posted by Mootsfox View Post
Erm... I guess you haven't played Flight Simulator X
So wrong, Flight Simulator X is very demanding on the CPU & supports multiple-threads. It is efficiently coded, but also CPU intensive. Crysis is just poorly coded & unoptimized.
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post #65 of 138
Quote:
Originally Posted by EmerilLIVE View Post
So wrong, Flight Simulator X is very demanding on the CPU & supports multiple-threads. It is efficiently coded, but also CPU intensive. Crysis is just poorly coded & unoptimized.
Since when is FSX well coded? I don't have the expansion pack, and wasn't talking about that.
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post #66 of 138
Uhh, don't care about getting strangled, I'm already dead, so why do they not need to upgrade teh 256 bit?
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post #67 of 138
Quote:
Originally Posted by RickJS View Post
Uhh, don't care about getting strangled, I'm already dead, so why do they not need to upgrade teh 256 bit?
Please correct me if I am wrong.

I think its because of the GDDR5, with slower memory, you need a memory controller that can fetch more of that memory at once to minimize the bottleneck/wait time, so with GDDR5 the memory controller isn't waiting for the memory at all.

This however could be wrong eventually once GPU's get more and more powerful and once they need to access a ton of memory, the memory controller will eventually become the bottleneck.

Don't be surprised this time next year when the high end cards have 512 bit with 1.5-2 gigs of memory.
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post #68 of 138
correct. the speed of the GDDR5 makes up for the lack of a 512 bit bus with the bandwidth be suffice for pretty much all apps with (just) 256 bit
post #69 of 138
I want to see benches.
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post #70 of 138
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Originally Posted by joemaniaci View Post
Please correct me if I am wrong.

I think its because of the GDDR5, with slower memory, you need a memory controller that can fetch more of that memory at once to minimize the bottleneck/wait time, so with GDDR5 the memory controller isn't waiting for the memory at all.

This however could be wrong eventually once GPU's get more and more powerful and once they need to access a ton of memory, the memory controller will eventually become the bottleneck.

Don't be surprised this time next year when the high end cards have 512 bit with 1.5-2 gigs of memory.
Quote:
Originally Posted by Bitemarks and bloodstains View Post
correct. the speed of the GDDR5 makes up for the lack of a 512 bit bus with the bandwidth be suffice for pretty much all apps with (just) 256 bit
Hmm

With that in mind, it makes me wonder why there was a 512bit interface on the 2900xt with its 1GB of GDDR4. and only a 256bit on the 3870 (as well as the 3870x2) series which runs on GDDR3?.

My previous card was the 2900xt, and the performance i experienced on that outmatched what i'm getting on my 3870x2. Drivers?, maybe so. but i'm still regretting it.
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