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GeForce GT 240 GDDR5 vs Radeon HD 4670 512MB

Intro

The GeForce GT 240 GDDR5 features a core clock speed of 550 MHz and a GDDR5 memory speed of 850 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It features 96 SPUs, 32 TAUs, and 8 Raster Operation Units.

Compare those specifications to the Radeon HD 4670 512MB, which comes with a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1000 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, 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

The GeForce GT 240 GDDR5, in theory, should be much faster than the Radeon HD 4670 512MB overall. (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 will be a lot (approximately 36%) better at AF 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 will be much (more or less 36%) better at AA than the GeForce GT 240 GDDR5, and also should be able to handle higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Comments

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

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