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GeForce GT 440 3GB vs Radeon HD 3850 256MB

Intro

The GeForce GT 440 3GB makes use of a 40 nm design. nVidia has clocked the core speed at 594 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this specific model. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

Compare those specs to the Radeon HD 3850 256MB, which features a clock speed of 668 MHz and a GDDR3 memory speed of 828 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB 56 Watts
Radeon HD 3850 256MB 75 Watts
Difference: 19 Watts (34%)

Memory Bandwidth

Performance-wise, the Radeon HD 3850 256MB should in theory be much better than the GeForce GT 440 3GB in general. (explain)

Radeon HD 3850 256MB 52992 MB/sec
GeForce GT 440 3GB 43200 MB/sec
Difference: 9792 (23%)

Texel Rate

The GeForce GT 440 3GB should be much (about 33%) faster with regards to anisotropic filtering than the Radeon HD 3850 256MB. (explain)

GeForce GT 440 3GB 14256 Mtexels/sec
Radeon HD 3850 256MB 10688 Mtexels/sec
Difference: 3568 (33%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 440 3GB is superior to the Radeon HD 3850 256MB, by a large margin. (explain)

GeForce GT 440 3GB 14256 Mpixels/sec
Radeon HD 3850 256MB 10688 Mpixels/sec
Difference: 3568 (33%)

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

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GeForce GT 440 3GB

Amazon.com

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Radeon HD 3850 256MB

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GT 440 3GB Radeon HD 3850 256MB
Manufacturer nVidia AMD
Year October 2010 Nov 19, 2007
Code Name GF106 RV670 PRO
Memory 3072 MB 256 MB
Core Speed 594 MHz 668 MHz
Memory Speed 1800 MHz 1656 MHz
Power (Max TDP) 56 watts 75 watts
Bandwidth 43200 MB/sec 52992 MB/sec
Texel Rate 14256 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 144 320(64x5)
Texture Mapping Units 24 16
Render Output Units 24 16
Bus Type GDDR3 GDDR3
Bus Width 192-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1170 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 are applied per second. This is calculated by multiplying the total amount of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GT 440 3GB

Amazon.com

Check prices at:

Radeon HD 3850 256MB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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