GeForce 8800 GT 256MB vs GeForce GTX 965M

Intro

Compare those specifications to the GeForce GTX 965M, which has core clock speeds of 944 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce 8800 GT 256MB		105 Watts
	Difference: 45 Watts (75%)

Memory Bandwidth

In theory, the GeForce GTX 965M is 43% quicker than the GeForce 8800 GT 256MB overall, because of its higher data rate. (explain)

GeForce GTX 965M		64000 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 19200 (43%)

Texel Rate

The GeForce GTX 965M is quite a bit (about 80%) more effective at anisotropic filtering than the GeForce 8800 GT 256MB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce 8800 GT 256MB		33600 Mtexels/sec
	Difference: 26816 (80%)

Pixel Rate

The GeForce GTX 965M will be a lot (about 215%) faster with regards to AA than the GeForce 8800 GT 256MB, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce 8800 GT 256MB		9600 Mpixels/sec
	Difference: 20608 (215%)

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

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock 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 applied in a second.

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