GeForce 9500 GT 1GB GDDR3 vs Radeon HD 3650

Intro

Compare all of that to the Radeon HD 3650, which uses a 55 nm design. AMD has clocked the core speed at 725 MHz. The GDDR4 memory works at a frequency of 800 MHz on this card. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 1GB GDDR3		50 Watts
Radeon HD 3650		78 Watts
	Difference: 28 Watts (56%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

The GeForce 9500 GT 1GB GDDR3 is a lot (approximately 52%) more effective at texture filtering than the Radeon HD 3650. (explain)

GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 3000 (52%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9500 GT 1GB GDDR3 is the winner, and very much so. (explain)

GeForce 9500 GT 1GB GDDR3		4400 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 1500 (52%)

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 data (in units of MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.