Geforce GTX 770 vs Radeon HD 4670 512MB

Intro

Compare those specifications to the Radeon HD 4670 512MB, which comes with core clock 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 as well as 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
Geforce GTX 770		230 Watts
	Difference: 160 Watts (229%)

Memory Bandwidth

The Geforce GTX 770, in theory, should perform much faster than the Radeon HD 4670 512MB in general. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 192384 (601%)

Texel Rate

The Geforce GTX 770 will be quite a bit (about 458%) faster with regards to AF than the Radeon HD 4670 512MB. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 109888 (458%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 770 is a better choice, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 27472 (458%)

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 MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling 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 graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.