GeForce GTX 285 1GB vs GeForce GTX 650

Intro

Compare those specs to the GeForce GTX 650, which uses a 28 nm design. nVidia has set the core speed at 1058 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this model. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator 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 should in theory perform quite a bit 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 should be much (more or less 53%) better at 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

If using high levels of AA is important to you, then the GeForce GTX 285 1GB is the winner, by far. (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 (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on 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 memory bandwidth is, the lower the ability to get to the max fill rate.