Radeon HD 3650 512MB vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which has a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It features 1120(224x5) SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
Radeon HD 5830		175 Watts
	Difference: 97 Watts (124%)

Memory Bandwidth

The Radeon HD 5830 should in theory perform much faster than the Radeon HD 3650 512MB overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 102400 (400%)

Texel Rate

The Radeon HD 5830 is a lot (approximately 672%) more effective at AF than the Radeon HD 3650 512MB. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 39000 (672%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5830 is superior to the Radeon HD 3650 512MB, and very much so. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 9900 (341%)

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 maximum amount of data (measured in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.