GeForce GT 340 1GB vs Radeon HD 4670 512MB

Intro

Compare those specifications to the Radeon HD 4670 512MB, which features a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon HD 4670 512MB		70 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

Theoretically, the GeForce GT 340 1GB should be a lot faster than the Radeon HD 4670 512MB overall. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 22400 (70%)

Texel Rate

The Radeon HD 4670 512MB is quite a bit (about 36%) better at AF than the GeForce GT 340 1GB. (explain)

Radeon HD 4670 512MB		24000 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 6400 (36%)

Pixel Rate

The Radeon HD 4670 512MB should be a lot (more or less 36%) more effective at anti-aliasing than the GeForce GT 340 1GB, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 4670 512MB		6000 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 1600 (36%)

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 information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.