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

Intro

Compare all of that to the Radeon HD 4670 512MB, which makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 memory runs at a speed of 1000 MHz on this particular card. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 should theoretically perform a lot 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 should be much (about 147%) more effective at AF 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

If using high levels of AA is important to you, then the GeForce GTX 650 Ti 2GB is the winner, by far. (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: Bandwidth is the max amount of data (measured in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.