GeForce GTS 450 vs Radeon HD 3650

Intro

Compare that to the Radeon HD 3650, which comes with GPU clock speed of 725 MHz, and 1024 MB of GDDR4 memory running at 800 MHz through a 128-bit bus. It also features 120(24x5) Stream Processors, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
GeForce GTS 450		106 Watts
	Difference: 28 Watts (36%)

Memory Bandwidth

Performance-wise, the GeForce GTS 450 should theoretically be a lot better than the Radeon HD 3650 overall. (explain)

GeForce GTS 450		57728 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 32128 (126%)

Texel Rate

The GeForce GTS 450 is a lot (approximately 332%) more effective at texture filtering than the Radeon HD 3650. (explain)

GeForce GTS 450		25056 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 19256 (332%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTS 450 is superior to the Radeon HD 3650, by far. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 9628 (332%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 worked out by multiplying the total texture units by the core clock speed of the chip. The higher 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 that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.