GeForce GTX 460 SE vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which has GPU clock speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM set to run at 1100 MHz through a 128-bit bus. It also is made up of 320(64x5) Stream Processors, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 SE should in theory be much superior to the Radeon HD 4670 1GB overall. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 73600 (209%)

Texel Rate

The GeForce GTX 460 SE will be quite a bit (more or less 30%) better at AF than the Radeon HD 4670 1GB. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 7200 (30%)

Pixel Rate

The GeForce GTX 460 SE will be a lot (approximately 247%) more effective at full screen anti-aliasing than the Radeon HD 4670 1GB, and able to handle higher resolutions better. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 14800 (247%)

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 maximum amount of data (in units of MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.