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GeForce 8600 GS (OEM) vs GeForce GTX 650

Intro

The GeForce 8600 GS (OEM) makes use of a 80 nm design. nVidia has set the core frequency at 540 MHz. The DDR2 memory is set to run at a frequency of 400 MHz on this particular card. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare those specifications to the GeForce GTX 650, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1058 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this specific model. It features 384 SPUs as well as 32 TAUs and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GS (OEM) 47 Watts
GeForce GTX 650 64 Watts
Difference: 17 Watts (36%)

Memory Bandwidth

The GeForce GTX 650 should theoretically be a lot faster than the GeForce 8600 GS (OEM) in general. (explain)

GeForce GTX 650 80000 MB/sec
GeForce 8600 GS (OEM) 12800 MB/sec
Difference: 67200 (525%)

Texel Rate

The GeForce GTX 650 is quite a bit (more or less 292%) faster with regards to anisotropic filtering than the GeForce 8600 GS (OEM). (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce 8600 GS (OEM) 8640 Mtexels/sec
Difference: 25216 (292%)

Pixel Rate

The GeForce GTX 650 is quite a bit (more or less 292%) more effective at FSAA than the GeForce 8600 GS (OEM), and should be capable of handling higher resolutions better. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce 8600 GS (OEM) 4320 Mpixels/sec
Difference: 12608 (292%)

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

GeForce 8600 GS (OEM)

Amazon.com

GeForce GTX 650

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model GeForce 8600 GS (OEM) GeForce GTX 650
Manufacturer nVidia nVidia
Year April 2007 September 2012
Code Name G84 GK107
Fab Process 80 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 256 MB 2048 MB
Core Speed 540 MHz 1058 MHz
Shader Speed 1180 MHz 1058 MHz
Memory Speed 400 MHz (800 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 32 384
Texture Mapping Units 16 32
Render Output Units 8 16
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.3
Power (Max TDP) 47 watts 64 watts
Shader Model 4.0 5.0
Bandwidth 12800 MB/sec 80000 MB/sec
Texel Rate 8640 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 16928 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

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