GeForce GTX 650 vs Radeon HD 3650

Intro

Compare those specs to the Radeon HD 3650, which makes use of a 55 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR4 RAM runs at a speed of 800 MHz on this specific card. It features 120(24x5) SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 3650		78 Watts
	Difference: 14 Watts (22%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 should perform much faster than the Radeon HD 3650 overall. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 54400 (213%)

Texel Rate

The GeForce GTX 650 will be a lot (more or less 484%) more effective at AF than the Radeon HD 3650. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 28056 (484%)

Pixel Rate

The GeForce GTX 650 will be a lot (about 484%) faster with regards to FSAA than the Radeon HD 3650, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 14028 (484%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.