GeForce GT 440 1.5GB vs Radeon HD 6790

Intro

Compare that to the Radeon HD 6790, which has a clock frequency of 840 MHz and a GDDR5 memory frequency of 1050 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is made up of 800 SPUs, 40 TAUs, and 16 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

Radeon HD 6790		2150 points
GeForce GT 440 1.5GB		840 points
	Difference: 1310 (156%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
Radeon HD 6790		150 Watts
	Difference: 94 Watts (168%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 should be 211% faster than the GeForce GT 440 1.5GB overall, due to its greater bandwidth. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 91200 (211%)

Texel Rate

The Radeon HD 6790 will be much (approximately 136%) faster with regards to texture filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 19344 (136%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 440 1.5GB is superior to the Radeon HD 6790, though not by far. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 816 (6%)

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 (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.