GeForce GT 440 3GB vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which comes with a core clock frequency of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Radeon HD 5770		108 Watts
	Difference: 52 Watts (93%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 should be quite a bit faster than the GeForce GT 440 3GB overall. (explain)

Radeon HD 5770		76800 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 33600 (78%)

Texel Rate

The Radeon HD 5770 is much (approximately 138%) better at texture filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 19744 (138%)

Pixel Rate

The GeForce GT 440 3GB should be a little bit (about 5%) faster with regards to AA than the Radeon HD 5770, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 656 (5%)

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 (in units of megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.