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GeForce GT 240 GDDR5 vs Radeon HD 4670 512MB

Intro

The GeForce GT 240 GDDR5 features a GPU core speed of 550 MHz, and the 512 MB of GDDR5 RAM runs at 850 MHz through a 128-bit bus. It also is made up of 96 SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the Radeon HD 4670 512MB, which has a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also makes use of a 128-bit bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

As far as performance goes, the GeForce GT 240 GDDR5 should theoretically be much better than the Radeon HD 4670 512MB in general. (explain)

GeForce GT 240 GDDR5 54400 MB/sec
Radeon HD 4670 512MB 32000 MB/sec
Difference: 22400 (70%)

Texel Rate

The Radeon HD 4670 512MB is quite a bit (approximately 36%) faster with regards to anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

Radeon HD 4670 512MB 24000 Mtexels/sec
GeForce GT 240 GDDR5 17600 Mtexels/sec
Difference: 6400 (36%)

Pixel Rate

The Radeon HD 4670 512MB is quite a bit (more or less 36%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 4670 512MB 6000 Mpixels/sec
GeForce GT 240 GDDR5 4400 Mpixels/sec
Difference: 1600 (36%)

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

Amazon.com

Radeon HD 4670 512MB

Amazon.com

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 Radeon HD 4670 512MB
Manufacturer nVidia AMD
Year Novermber 2009 Sep 10, 2008
Code Name GT215 RV730 XT
Memory 512 MB 512 MB
Core Speed 550 MHz 750 MHz
Memory Speed 3400 MHz 2000 MHz
Power (Max TDP) 70 watts 70 watts
Bandwidth 54400 MB/sec 32000 MB/sec
Texel Rate 17600 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 96 320(64x5)
Texture Mapping Units 32 32
Render Output Units 8 8
Bus Type GDDR5 GDDR4/GDDR3/DDR3/DDR2
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 289 million 514 million
Bus PCIe x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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

Comments

One Response to “GeForce GT 240 GDDR5 vs Radeon HD 4670 512MB”
[Vând] PLACA VIDEO Palit GeForce GT 240 512MB DDR5 says:

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