GeForce GTX 970 vs Radeon HD 3650 256MB

Intro

Compare those specifications to the Radeon HD 3650 256MB, which features GPU core speed of 725 MHz, and 256 MB of DDR2 RAM set to run at 800 MHz through a 128-bit bus. It also features 120(24x5) Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX 970		145 Watts
	Difference: 67 Watts (86%)

Memory Bandwidth

The GeForce GTX 970, in theory, should be a lot faster than the Radeon HD 3650 256MB overall. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 198400 (775%)

Texel Rate

The GeForce GTX 970 will be a lot (approximately 1783%) faster with regards to anisotropic filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 103400 (1783%)

Pixel Rate

The GeForce GTX 970 will be a lot (approximately 2217%) better at anti-aliasing than the Radeon HD 3650 256MB, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 64300 (2217%)

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 data (counted in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 are processed in one second. This number is worked out by multiplying the total amount of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 max fill rate.