GeForce GT 430 (OEM) vs Radeon HD 4850 512MB

Intro

Compare all of that to the Radeon HD 4850 512MB, which features a core clock speed of 625 MHz and a GDDR3 memory speed of 993 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon HD 4850 512MB		110 Watts
	Difference: 50 Watts (83%)

Memory Bandwidth

In theory, the Radeon HD 4850 512MB is 121% faster than the GeForce GT 430 (OEM) overall, due to its higher bandwidth. (explain)

Radeon HD 4850 512MB		63552 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 34752 (121%)

Texel Rate

The Radeon HD 4850 512MB should be quite a bit (approximately 123%) more effective at anisotropic filtering than the GeForce GT 430 (OEM). (explain)

Radeon HD 4850 512MB		25000 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 13800 (123%)

Pixel Rate

The Radeon HD 4850 512MB is quite a bit (approximately 257%) faster with regards to anti-aliasing than the GeForce GT 430 (OEM), and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 4850 512MB		10000 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 7200 (257%)

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 max amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that are applied in one second. This number is worked out 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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.