GeForce GT 440 1.5GB vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which features core clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs as well as 192 Texture Address Units and 48 ROPs.

Display Graphs

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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

Geforce GTX 780		10082 points
GeForce GT 440 1.5GB		840 points
	Difference: 9242 (1100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Geforce GTX 780		250 Watts
	Difference: 194 Watts (346%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 780 should theoretically be much superior to the GeForce GT 440 1.5GB in general. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 245184 (568%)

Texel Rate

The Geforce GTX 780 will be quite a bit (approximately 1062%) faster with regards to AF than the GeForce GT 440 1.5GB. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 151440 (1062%)

Pixel Rate

The Geforce GTX 780 is quite a bit (approximately 191%) more effective at full screen anti-aliasing than the GeForce GT 440 1.5GB, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GT 440 1.5GB		14256 Mpixels/sec
	Difference: 27168 (191%)

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 megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated 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 card will be at handling 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 the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.