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GeForce GT 440 1.5GB vs Radeon HD 4870 X2

Intro

The GeForce GT 440 1.5GB has a GPU core speed of 594 MHz, and the 1536 MB of GDDR3 memory runs at 900 MHz through a 192-bit bus. It also is made up of 144 Stream Processors, 24 TAUs, and 24 Raster Operation Units.

Compare those specifications to the Radeon HD 4870 X2, which comes with a core clock speed of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB 56 Watts
Radeon HD 4870 X2 350 Watts
Difference: 294 Watts (525%)

Memory Bandwidth

The Radeon HD 4870 X2 should theoretically perform much faster than the GeForce GT 440 1.5GB in general. (explain)

Radeon HD 4870 X2 230400 MB/sec
GeForce GT 440 1.5GB 43200 MB/sec
Difference: 187200 (433%)

Texel Rate

The Radeon HD 4870 X2 will be a lot (approximately 321%) better at AF than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
GeForce GT 440 1.5GB 14256 Mtexels/sec
Difference: 45744 (321%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 4870 X2 is a better choice, by a large margin. (explain)

Radeon HD 4870 X2 24000 Mpixels/sec
GeForce GT 440 1.5GB 14256 Mpixels/sec
Difference: 9744 (68%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GT 440 1.5GB

Amazon.com

Check prices at:

Radeon HD 4870 X2

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.

Specifications

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Model GeForce GT 440 1.5GB Radeon HD 4870 X2
Manufacturer nVidia AMD
Year October 2010 Aug 12, 2008
Code Name GF106 R700
Memory 1536 MB 1024 MB (x2)
Core Speed 594 MHz 750 MHz (x2)
Memory Speed 1800 MHz 3600 MHz (x2)
Power (Max TDP) 56 watts 350 watts
Bandwidth 43200 MB/sec 230400 MB/sec
Texel Rate 14256 Mtexels/sec 60000 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 144 800(160x5) (x2)
Texture Mapping Units 24 40 (x2)
Render Output Units 24 16 (x2)
Bus Type GDDR3 GDDR5
Bus Width 192-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 1170 million 956 million
Bus PCIe x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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

Display Prices

Hide Prices

GeForce GT 440 1.5GB

Amazon.com

Check prices at:

Radeon HD 4870 X2

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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