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GeForce GT 240 GDDR5 vs Radeon HD 4670 512MB

Intro

The GeForce GT 240 GDDR5 has a clock frequency of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 96 SPUs, 32 TAUs, and 8 ROPs.

Compare that to the Radeon HD 4670 512MB, which features GPU core speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 RAM running at 1000 MHz through a 128-bit bus. It also features 320(64x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Battlefield Bad Company 2

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce GT 240 GDDR5 18 FPS
Radeon HD 4670 512MB 13 FPS
Difference: 5 FPS (38%)

Left4Dead 2

Settings: Very High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4670 512MB 39 FPS
GeForce GT 240 GDDR5 27 FPS
Difference: 12 FPS (44%)

Mass Effect 2

Settings: Maximum Quality
AA: none
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce GT 240 GDDR5 43 FPS
Radeon HD 4670 512MB 42 FPS
Difference: 1 FPS (2%)

Supreme Commander 2

Settings: High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4670 512MB 29 FPS
GeForce GT 240 GDDR5 26 FPS
Difference: 3 FPS (12%)

Radeon HD 4670 512MB wins

(Based entirely on the benchmarks listed above)

When combining all game benchmark scores on this page together, the Radeon HD 4670 512MB wins overall, by 9 FPS. Please note that we do not have the results of every benchmark ever done for these cards, so the results may differ wildly in different games.

Radeon HD 4670 512MB 123 FPS
GeForce GT 240 GDDR5 114 FPS
Difference: 9 FPS (8%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the GeForce GT 240 GDDR5 should be a lot faster 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 (about 36%) faster with regards to texture 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 should be a lot (about 36%) faster with regards to AA than the GeForce GT 240 GDDR5, and also able to handle higher screen resolutions without slowing down too much. (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

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

Model GeForce GT 240 GDDR5 Radeon HD 4670 512MB
Manufacturer nVidia AMD
Year Novermber 2009 Sep 10, 2008
Code Name GT215 RV730 XT
Fab Process 40 nm 55 nm
Bus PCIe x16 PCIe 2.0 x16, AGP 8x
Memory 512 MB 512 MB
Core Speed 550 MHz 750 MHz
Shader Speed 1360 MHz (N/A) MHz
Memory Speed 850 MHz (3400 MHz effective) 1000 MHz (2000 MHz effective)
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
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0
Power (Max TDP) 70 watts 70 watts
Shader Model 4.1 4.1
Bandwidth 54400 MB/sec 32000 MB/sec
Texel Rate 17600 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 6000 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, 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 can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

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