GeForce GT 430 (OEM) vs Radeon HD 4750

Intro

Compare all that to the Radeon HD 4750, which uses a 40 nm design. AMD has clocked the core frequency at 730 MHz. The GDDR5 memory works at a speed of 800 MHz on this particular card. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon HD 4750		75 Watts
	Difference: 15 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4750 should be 78% faster than the GeForce GT 430 (OEM) in general, because of its higher bandwidth. (explain)

Radeon HD 4750		51200 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 22400 (78%)

Texel Rate

The Radeon HD 4750 is a lot (approximately 109%) better at anisotropic filtering than the GeForce GT 430 (OEM). (explain)

Radeon HD 4750		23360 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 12160 (109%)

Pixel Rate

The Radeon HD 4750 should be a lot (approximately 317%) faster with regards to FSAA than the GeForce GT 430 (OEM), and also able to handle higher screen resolutions better. (explain)

Radeon HD 4750		11680 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 8880 (317%)

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 information (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.