GeForce GTX 480 vs Radeon HD 4670 512MB

Intro

Compare those specifications to the Radeon HD 4670 512MB, which features core speeds of 750 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory. It features 320(64x5) SPUs along with 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 480		250 Watts
	Difference: 180 Watts (257%)

Memory Bandwidth

The GeForce GTX 480 should theoretically be a lot faster than the Radeon HD 4670 512MB in general. (explain)

GeForce GTX 480		177408 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 145408 (454%)

Texel Rate

The GeForce GTX 480 will be a lot (more or less 75%) better at anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 18000 (75%)

Pixel Rate

The GeForce GTX 480 is quite a bit (more or less 460%) faster with regards to full screen anti-aliasing than the Radeon HD 4670 512MB, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon HD 4670 512MB		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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling 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 graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. 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 bandwidth is, the lower the ability to get to the max fill rate.