GeForce GTX 285 1GB vs Geforce GTX 670

Intro

Compare that to the Geforce GTX 670, which features a core clock frequency of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 34 Watts (20%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should perform much faster than the GeForce GTX 285 1GB overall. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 33024 (21%)

Texel Rate

The Geforce GTX 670 will be quite a bit (more or less 98%) more effective at texture filtering than the GeForce GTX 285 1GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 50640 (98%)

Pixel Rate

The Geforce GTX 670 should be a lot (approximately 41%) faster with regards to AA than the GeForce GTX 285 1GB, and capable of handling higher screen resolutions better. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 8544 (41%)

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 largest amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.