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View Full Version : GeForce 6xxx vs. GeForce 5xxx in Bandwidth


Charlie Chang
10-20-04, 10:52 PM
What is the gap? I guess 6xxx is in the range of 60 GFLOS and 5xxx is in the range of 20 GFLOS. :nanahump:

MustangSVT
10-20-04, 10:59 PM
What the heck is GFLOPS? I thought you meant bandwidth:


6600NU - 8.8GB/s
6600GT - 16.0GB/s
6800NU - 22.4GB/s
6800GT - 32.0GB/s
6800U - 35.2GB/s

FX5900XT - 22.4GB/s
FX5900NU - 27.2GB/s
FX5900U - 27.2GB/s
FX5950U - 30.4GB/s

FX5200-FX5700U - not comparable

fivefeet8
10-20-04, 11:05 PM
I think he meant "Floating Point Operations Per Second". I'm not really sure about that either. It's a term used in the markeing of console systems and CPU performance mostly.

Diamond_G
10-21-04, 04:44 AM
I'm suprised that with the bandwith difference the 6800nu is able to pull away from the 5900's... Has to show that the nv4x arc is quite impressive...

Subtestube
10-21-04, 05:28 AM
Mmm.. if he's asking about FLOPS, then the answer is "A Lot". The NV40/R420 is roughly 4-6x as powerful as the most recent desktop CPUs if you only measure power in terms of floating point operations - that's what GPUs excel at, and I imagine also where the biggest diff between the NV40 and NV30 in terms of raw speed.

Marcos
10-21-04, 07:09 AM
As you can tell from this benchmark provided by www.anandtech.com, the results are barely even comparable

http://img67.exs.cx/img67/5936/3dmarcos.jpg

nIghtorius
10-21-04, 07:34 AM
As you can tell from this benchmark provided by www.anandtech.com, the results are barely even comparable

http://img67.exs.cx/img67/5936/3dmarcos.jpg

OMG.. the professionalism is oozing from this picture..

Darkoz
10-21-04, 08:07 AM
OMG.. the professionalism is oozing from this picture..

yes, I think it's a work in progress.....

Charlie Chang
10-21-04, 10:48 AM
What the heck is GFLOPS? I thought you meant bandwidth:

6600NU - 8.8GB/s
6600GT - 16.0GB/s
6800NU - 22.4GB/s
6800GT - 32.0GB/s
6800U - 35.2GB/s

FX5900XT - 22.4GB/s
FX5900NU - 27.2GB/s
FX5900U - 27.2GB/s
FX5950U - 30.4GB/s

FX5200-FX5700U - not comparable

Sorry, the GFLOPS is not right for bandwidth.

Surprised that 6xxx has lower bandwidth in some series.
6800GT looks impressive but I guess the main stream is 6600GT.

MustangSVT
10-21-04, 11:29 AM
The 6xxx line of cards appears to be a lot more efficient in using memory bandwidth than the FX 5xxx. As a comparison, the 6600 GT is faster than a FX 5950U, even though it has almost half the bandwidth.

Charlie Chang
10-21-04, 04:25 PM
The 6xxx line of cards appears to be a lot more efficient in using memory bandwidth than the FX 5xxx. As a comparison, the 6600 GT is faster than a FX 5950U, even though it has almost half the bandwidth.

How could it be? Suppose there are two offline buffers, the 3D model is rendered to that buffers then do some pos-processings and render to frame buffer finally. The time consuming is on the buffer coping. This is a simple operation and high bandwidth will be benefit. How could 6600GT do better than 5950U in this simple case?

MustangSVT
10-21-04, 04:47 PM
I don't know how it works but look at benchmarks for yourself:

FX5950U - 3Dmark2003 - 6000-6500
6660GT - 3dmark2003 - 7500-8000

ChrisRay
10-21-04, 05:09 PM
The 6xxx line of cards appears to be a lot more efficient in using memory bandwidth than the FX 5xxx. As a comparison, the 6600 GT is faster than a FX 5950U, even though it has almost half the bandwidth.


Well add the fact that the 5900 Series actually had more bandwith than it really needed, Its fillrate was way behind its bandwith output. Was almost pointless other than to try and win 1600x1200 benchmarks, because it just didnt have the fillrate to feed its massive bandwith.

superklye
10-21-04, 09:40 PM
As you can tell from this benchmark provided by www.anandtech.com, the results are barely even comparable

http://img67.exs.cx/img67/5936/3dmarcos.jpg

hahahahahaha that is awesome. :)

bkswaney
10-21-04, 09:43 PM
I don't know how it works but look at benchmarks for yourself:

FX5950U - 3Dmark2003 - 6000-6500
6660GT - 3dmark2003 - 7500-8000


Dang.... these new cards just eat and crap out
all high end cards from last gen.
Man nvidia did it right this time. "lol" :D