GeForce GTX 285 1GB vs GeForce GTX 965M

Intro

Compare that to the GeForce GTX 965M, which comes with core speeds of 944 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 144 Watts (240%)

Memory Bandwidth

In theory, the GeForce GTX 285 1GB will be 148% faster than the GeForce GTX 965M in general, because of its greater bandwidth. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 94976 (148%)

Texel Rate

The GeForce GTX 965M should be a small bit (about 17%) better at texture filtering than the GeForce GTX 285 1GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 8576 (17%)

Pixel Rate

The GeForce GTX 965M should be a lot (approximately 46%) better at FSAA than the GeForce GTX 285 1GB, and able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 965M		30208 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 9472 (46%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.