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Discussion On The ATI Radeon 5*** Series Before They Have Been Released Thread

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Drunk talks about amd as richer than intel which is wrong but i think he means amd and partner/s are richer than intel as he goes on to say how much they spent which he talks about with the new fab and new company they brought.
Amd partner as very deep pockets and wants in on the tech front as and when oil runs out.
just my take on it,i might be wrong but that what i think he means.
 
http://www.fudzilla.com/content/view/15436/65/


"We finally figured out out the final specification of the chip that we called RV870 and the fact that AMD plans to call it Radeon HD 5870 doesn’t come as a big surprise. The chip works at 825MHz and has 1600 shaders, two times more than RV770 which indicates that the chip is two times faster than the year old RV770.

The chip has as mmany as 2.1 billion transistors and is more than twice the number the RV770 packs, which has 956 million transistors. The card uses GDDR5 memory clocked at 1.3GHz (5.2GHz in quad mode) and can provide more than 150GB/second bandwidth. The power of this card stays at 180W while in idle the power drops down to 27W, three times less than the 90W on 4870.

By a rough specification-based estimate, the Radeon HD 5870 could end up two times faster than the Radeon HD 4870 but realistically, you should expect the new card to be faster by about 60 percent across the board.
 
Spazzfish said:
http://www.fudzilla.com/content/view/15436/65/


"We finally figured out out the final specification of the chip that we called RV870 and the fact that AMD plans to call it Radeon HD 5870 doesn’t come as a big surprise. The chip works at 825MHz and has 1600 shaders, two times more than RV770 which indicates that the chip is two times faster than the year old RV770.

The chip has as mmany as 2.1 billion transistors and is more than twice the number the RV770 packs, which has 956 million transistors. The card uses GDDR5 memory clocked at 1.3GHz (5.2GHz in quad mode) and can provide more than 150GB/second bandwidth. The power of this card stays at 180W while in idle the power drops down to 27W, three times less than the 90W on 4870.

By a rough specification-based estimate, the Radeon HD 5870 could end up two times faster than the Radeon HD 4870 but realistically, you should expect the new card to be faster by about 60 percent across the board.
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That's a BS article...

'We've figured out' yeah right, who've they heard it from?

As for 60% faster? More than double the transistors and all they get is 60% more speed?

They were saying 60% when they were talking 1200 shaders.
 
kylew said:
That's a BS article...

'We've figured out' yeah right, who've they heard it from?

As for 60% faster? More than double the transistors and all they get is 60% more speed?

They were saying 60% when they were talking 1200 shaders.
Click to expand...
Doubling stuff up doesn't mean performance will scale accordingly, an HD4870x2 isn't double the performance of an HD4870 in most conditions for example.
 
"The 5870 works at 825MHz and has 1600 shaders, two times more than RV770 which indicates that the chip is two times faster than the year old RV770

The chip has as mmany as 2.1 billion transistors and is more than twice the number the RV770 packs, which has 956 million transistors. The card uses GDDR5 memory clocked at 1.3GHz (5.2GHz in quad mode) and can provide more than 150GB/second bandwidth. The power of this card stays at 180W while in idle the power drops down to 27W, three times less than the 90W on 4870."

"ATI's Radeon HD 5850 card is a slower and crippled version of the Radeon HD 5870 and this slower card has 1440 shaders and runs at 725MHz"

"Just like the Radeon HD 5870, this card comes with 32ROPs and the maximum power consumption is 170W under load and 27W when idle. The launch date is September 23rd"

Added: The Radeon HD 5870 1GB should sell for $399 at launch, while Radeon HD 5870 2GB should sell for $449. At the same time, the slower Radeon HD 5850 with 1GB memory will sell for $299.

Just read it and thought I'd share it with everyone!
 
Wakinglimb said:
Doubling stuff up doesn't mean performance will scale accordingly, an HD4870x2 isn't double the performance of an HD4870 in most conditions for example.
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A 4870X2 relies on crossfire though, so it has overheads that the 5870 won't.

But the fact that the 4870X2 CAN = double the performance when at top efficiency gives a good indication that without crossfire overheads, a 5870 is capable of doubling a 4870.
 
Wakinglimb said:
Doubling stuff up doesn't mean performance will scale accordingly, an HD4870x2 isn't double the performance of an HD4870 in most conditions for example.
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Yes because you're talking about scaling two different workloads over two GPUs. CrossFire or SLI scaling almost never lives up to its theoretical potential. That's the drawback of Multi-GPU.

But it's a drawback single GPUs don't have. If you double a chip's functional units, performance will double. Bottlenecks occur only when you scale one part of a chip but not another.

In this case, though, the 5870 will have a lot less than double the bandwidth of the 4870, so that's one factor that could limit the 5870's performance. All you need is faster memory, though, so if at some point AMD/ATI are able to equip the cards with faster GDDR5 chips, we should see them live up to their potential.
 
Subtlesnake said:
Yes because you're talking about scaling two different workloads over two GPUs. CrossFire or SLI scaling almost never lives up to its theoretical potential. That's the drawback of Multi-GPU.

But it's a drawback single GPUs don't have. If you double a chip's functional units, performance will double. Bottlenecks occur only when you scale one part of a chip but not another.

In this case, though, the 5870 will have a lot less than double the bandwidth of the 4870, so that's one factor that could limit the 5870's performance. All you need is faster memory, though, so if at some point AMD/ATI are able to equip the cards with faster GDDR5 chips, we should see them live up to their potential.
Click to expand...
But you aren't scaling everything are you? The memory speed/interface bandwidth, the PCI-Express lanes etc. Doubling some parts of the design will not necessarily equal double performance.
 
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