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GeForce GT 240 GDDR5 1GB vs Radeon HD 4850 512MB

Intro

The GeForce GT 240 GDDR5 1GB has a GPU clock speed of 550 MHz, and the 1024 MB of GDDR5 memory is set to run at 850 MHz through a 128-bit bus. It also features 96 SPUs, 32 Texture Address Units, and 8 ROPs.

Compare those specs to the Radeon HD 4850 512MB, which comes with core speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB 70 Watts
Radeon HD 4850 512MB 110 Watts
Difference: 40 Watts (57%)

Memory Bandwidth

Theoretically, the Radeon HD 4850 512MB should be a little bit faster than the GeForce GT 240 GDDR5 1GB overall. (explain)

Radeon HD 4850 512MB 63552 MB/sec
GeForce GT 240 GDDR5 1GB 54400 MB/sec
Difference: 9152 (17%)

Texel Rate

The Radeon HD 4850 512MB will be quite a bit (approximately 42%) more effective at anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

Radeon HD 4850 512MB 25000 Mtexels/sec
GeForce GT 240 GDDR5 1GB 17600 Mtexels/sec
Difference: 7400 (42%)

Pixel Rate

The Radeon HD 4850 512MB is quite a bit (approximately 127%) faster with regards to FSAA than the GeForce GT 240 GDDR5 1GB, and able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 4850 512MB 10000 Mpixels/sec
GeForce GT 240 GDDR5 1GB 4400 Mpixels/sec
Difference: 5600 (127%)

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 240 GDDR5 1GB

Amazon.com

Check prices at:

Radeon HD 4850 512MB

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 240 GDDR5 1GB Radeon HD 4850 512MB
Manufacturer nVidia AMD
Year November 2009 Jun 25, 2008
Code Name GT215 RV770 PRO
Memory 1024 MB 512 MB
Core Speed 550 MHz 625 MHz
Memory Speed 3400 MHz 1986 MHz
Power (Max TDP) 70 watts 110 watts
Bandwidth 54400 MB/sec 63552 MB/sec
Texel Rate 17600 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 96 800(160x5)
Texture Mapping Units 32 40
Render Output Units 8 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 289 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. 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 - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 240 GDDR5 1GB

Amazon.com

Check prices at:

Radeon HD 4850 512MB

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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