GeForce GT 450 (OEM) vs Radeon HD 3650 512MB

Intro

Compare that to the Radeon HD 3650 512MB, which comes with a clock frequency of 725 MHz and a GDDR3 memory speed of 800 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 28 Watts (36%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 450 (OEM) is 275% quicker than the Radeon HD 3650 512MB in general, because of its higher data rate. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 70400 (275%)

Texel Rate

The GeForce GT 450 (OEM) will be much (about 227%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 13160 (227%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GT 450 (OEM) is a better choice, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 16060 (554%)

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 megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.