GeForce GTX 480 vs Radeon HD 4670 1GB

Intro

Compare all of that to the Radeon HD 4670 1GB, which comes with a GPU core clock speed of 750 MHz, and 1024 MB of GDDR4/GDDR3/DDR3/DDR2 memory set to run at 1100 MHz through a 128-bit bus. It also features 320(64x5) Stream Processors, 32 TAUs, 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 480		250 Watts
	Difference: 180 Watts (257%)

Memory Bandwidth

In theory, the GeForce GTX 480 will be 404% quicker than the Radeon HD 4670 1GB in general, because of its greater data rate. (explain)

GeForce GTX 480		177408 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 142208 (404%)

Texel Rate

The GeForce GTX 480 is quite a bit (approximately 75%) faster with regards to texture filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 18000 (75%)

Pixel Rate

The GeForce GTX 480 will be much (approximately 460%) more effective at full screen anti-aliasing than the Radeon HD 4670 1GB, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 27600 (460%)

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 (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen 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 texture units by the core clock speed of the chip. The better this number, the better the video 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 card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.