GeForce GT 640 DDR3 vs Radeon HD 4350

Intro

Compare that to the Radeon HD 4350, which features core speeds of 575 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 80(16x5) SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
GeForce GT 640 DDR3		65 Watts
	Difference: 43 Watts (195%)

Memory Bandwidth

Theoretically, the GeForce GT 640 DDR3 should perform quite a bit faster than the Radeon HD 4350 in general. (explain)

GeForce GT 640 DDR3		57024 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 49024 (613%)

Texel Rate

The GeForce GT 640 DDR3 should be a lot (more or less 526%) more effective at AF than the Radeon HD 4350. (explain)

GeForce GT 640 DDR3		28800 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 24200 (526%)

Pixel Rate

The GeForce GT 640 DDR3 will be quite a bit (approximately 526%) faster with regards to FSAA than the Radeon HD 4350, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GT 640 DDR3		14400 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 12100 (526%)

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 largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.