GeForce GT 440 1.5GB vs Radeon HD 7770

Intro

Compare all that to the Radeon HD 7770, which has core speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7770		3180 points
GeForce GT 440 1.5GB		840 points
	Difference: 2340 (279%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 7770		80 Watts
	Difference: 24 Watts (43%)

Memory Bandwidth

In theory, the Radeon HD 7770 is 67% quicker than the GeForce GT 440 1.5GB overall, due to its greater bandwidth. (explain)

Radeon HD 7770		72000 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 28800 (67%)

Texel Rate

The Radeon HD 7770 will be a lot (about 181%) better at anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 7770		40000 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 25744 (181%)

Pixel Rate

The Radeon HD 7770 should be just a bit (about 12%) better at FSAA than the GeForce GT 440 1.5GB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 7770		16000 Mpixels/sec
GeForce GT 440 1.5GB		14256 Mpixels/sec
	Difference: 1744 (12%)

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 data (measured in megabytes per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to reach the max fill rate.