GeForce GTX 465 vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which comes with a core clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1100 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 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 1GB		70 Watts
GeForce GTX 465		200 Watts
	Difference: 130 Watts (186%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 465 will be 191% quicker than the Radeon HD 4670 1GB overall, because of its greater data rate. (explain)

GeForce GTX 465		102592 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 67392 (191%)

Texel Rate

The GeForce GTX 465 should be a bit (approximately 11%) more effective at texture filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 465		26708 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 2708 (11%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 465 is superior to the Radeon HD 4670 1GB, by far. (explain)

GeForce GTX 465		19424 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 13424 (224%)

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. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core 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 applied 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 amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.