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

Intro

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

Compare those specifications to the Radeon HD 4850 1GB, which has a clock frequency of 625 MHz and a GDDR4 memory frequency of 993 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is comprised 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 240 GDDR5 1GB 70 Watts
Radeon HD 4850 1GB 110 Watts
Difference: 40 Watts (57%)

Memory Bandwidth

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

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

Texel Rate

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

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 4850 1GB is the winner, by far. (explain)

Radeon HD 4850 1GB 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 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 240 GDDR5 1GB Radeon HD 4850 1GB
Manufacturer nVidia AMD
Year November 2009 Jun 25, 2008
Code Name GT215 RV770 PRO
Memory 1024 MB 1024 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 GDDR4
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: Bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can 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 colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially 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 240 GDDR5 1GB

Amazon.com

Check prices at:

Radeon HD 4850 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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