GeForce GTX 285 1GB vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which features a GPU core clock speed of 1058 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 140 Watts (219%)

Memory Bandwidth

The GeForce GTX 285 1GB, in theory, should perform much faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 78976 (99%)

Texel Rate

The GeForce GTX 285 1GB is much (more or less 53%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 17984 (53%)

Pixel Rate

The GeForce GTX 285 1GB is much (more or less 22%) better at AA than the GeForce GTX 650, and able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 3808 (22%)

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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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