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GeForce 8800 GTS (G92) vs GeForce GTX 650

Intro

The GeForce 8800 GTS (G92) features a core clock frequency of 650 MHz and a GDDR3 memory frequency of 970 MHz. It also uses a 256-bit memory bus, and uses a 65 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the GeForce GTX 650, which has GPU clock speed of 1058 MHz, and 2048 MB of GDDR5 memory set to run at 1250 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 71 Watts (111%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 should theoretically be quite a bit superior to the GeForce 8800 GTS (G92) in general. (explain)

GeForce GTX 650 80000 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 17920 (29%)

Texel Rate

The GeForce 8800 GTS (G92) is much (more or less 23%) more effective at AF than the GeForce GTX 650. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 7744 (23%)

Pixel Rate

The GeForce GTX 650 is much (more or less 63%) better at anti-aliasing than the GeForce 8800 GTS (G92), and also able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce 8800 GTS (G92) 10400 Mpixels/sec
Difference: 6528 (63%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce 8800 GTS (G92)

Amazon.com

Other US-based stores

GeForce GTX 650

Amazon.com

Other US-based stores

Specifications

Model GeForce 8800 GTS (G92) GeForce GTX 650
Manufacturer nVidia nVidia
Year Dec 2007 September 2012
Code Name G92 GK107
Fab Process 65 nm 28 nm
Bus PCIe x16 2.0 PCIe 3.0 x16
Memory 512 MB 2048 MB
Core Speed 650 MHz 1058 MHz
Shader Speed 1625 MHz 1058 MHz
Memory Speed 970 MHz (1940 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 128 384
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.0 OpenGL 4.3
Power (Max TDP) 135 watts 64 watts
Shader Model 4.0 5.0
Bandwidth 62080 MB/sec 80000 MB/sec
Texel Rate 41600 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 16928 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Comments

One Response to “GeForce 8800 GTS (G92) vs GeForce GTX 650”
Anonymous says:
thanks....really usefull information

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