GeForce GTX 650 Ti 2GB vs Radeon HD 4670 512MB

Intro

Compare those specs to the Radeon HD 4670 512MB, which comes with GPU clock speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 40 Watts (57%)

Memory Bandwidth

The GeForce GTX 650 Ti 2GB, in theory, should be much faster than the Radeon HD 4670 512MB in general. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 54400 (170%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be a lot (about 147%) faster with regards to texture filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 35392 (147%)

Pixel Rate

The GeForce GTX 650 Ti 2GB will be much (more or less 147%) more effective at full screen anti-aliasing than the Radeon HD 4670 512MB, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 8848 (147%)

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 max amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.