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GeForce GT 440 1.5GB vs Radeon HD 4870 1GB

Intro

The GeForce GT 440 1.5GB makes use of a 40 nm design. nVidia has set the core frequency at 594 MHz. The GDDR3 RAM works at a speed of 900 MHz on this card. It features 144 SPUs along with 24 TAUs and 24 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4870 1GB, which features GPU core speed of 750 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB 56 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 94 Watts (168%)

Memory Bandwidth

The Radeon HD 4870 1GB should in theory be much faster than the GeForce GT 440 1.5GB overall. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GT 440 1.5GB 43200 MB/sec
Difference: 72000 (167%)

Texel Rate

The Radeon HD 4870 1GB should be much (about 110%) faster with regards to anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4870 1GB 30000 Mtexels/sec
GeForce GT 440 1.5GB 14256 Mtexels/sec
Difference: 15744 (110%)

Pixel Rate

The GeForce GT 440 1.5GB will be a little bit (approximately 19%) better at AA than the Radeon HD 4870 1GB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GT 440 1.5GB 14256 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 2256 (19%)

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 1.5GB

Amazon.com

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Radeon HD 4870 1GB

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 1GB
Manufacturer nVidia AMD
Year October 2010 Jun 25, 2008
Code Name GF106 RV770 XT
Memory 1536 MB 1024 MB
Core Speed 594 MHz 750 MHz
Memory Speed 1800 MHz 3600 MHz
Power (Max TDP) 56 watts 150 watts
Bandwidth 43200 MB/sec 115200 MB/sec
Texel Rate 14256 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 144 800(160x5)
Texture Mapping Units 24 40
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 192-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1170 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card 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 maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GT 440 1.5GB

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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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