GeForce GT 450 (OEM) vs Radeon HD 3650 256MB

Intro

Compare all that to the Radeon HD 3650 256MB, which makes use of a 55 nm design. AMD has clocked the core speed at 725 MHz. The DDR2 memory works at a frequency of 800 MHz on this card. It features 120(24x5) SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 28 Watts (36%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should theoretically be a lot better than the Radeon HD 3650 256MB in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 70400 (275%)

Texel Rate

The GeForce GT 450 (OEM) should be quite a bit (approximately 227%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 13160 (227%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 450 (OEM) is the winner, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 3650 256MB		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 largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.