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GeForce 9500 GT 1GB GDDR3 vs GeForce GT 240 GDDR5

Intro

The GeForce 9500 GT 1GB GDDR3 comes with clock speeds of 550 MHz on the GPU, and 800 MHz on the 1024 MB of GDDR3 RAM. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Compare those specifications to the GeForce GT 240 GDDR5, which has a GPU core clock speed of 550 MHz, and 512 MB of GDDR5 memory set to run at 850 MHz through a 128-bit bus. It also is made up of 96 Stream Processors, 32 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 1GB GDDR3 50 Watts
GeForce GT 240 GDDR5 70 Watts
Difference: 20 Watts (40%)

Memory Bandwidth

Theoretically, the GeForce GT 240 GDDR5 should be quite a bit faster than the GeForce 9500 GT 1GB GDDR3 in general. (explain)

GeForce GT 240 GDDR5 54400 MB/sec
GeForce 9500 GT 1GB GDDR3 25600 MB/sec
Difference: 28800 (113%)

Texel Rate

The GeForce GT 240 GDDR5 is quite a bit (more or less 100%) better at AF than the GeForce 9500 GT 1GB GDDR3. (explain)

GeForce GT 240 GDDR5 17600 Mtexels/sec
GeForce 9500 GT 1GB GDDR3 8800 Mtexels/sec
Difference: 8800 (100%)

Pixel Rate

Both cards have the exact same pixel rate, so theoretically they should perform equally good at at full screen anti-aliasing, and be capable of handling the same resolutions. (explain)

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 9500 GT 1GB GDDR3

Amazon.com

GeForce GT 240 GDDR5

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 9500 GT 1GB GDDR3 GeForce GT 240 GDDR5
Manufacturer nVidia nVidia
Year July 2008 Novermber 2009
Code Name G96b GT215
Memory 1024 MB 512 MB
Core Speed 550 MHz 550 MHz
Memory Speed 1600 MHz 3400 MHz
Power (Max TDP) 50 watts 70 watts
Bandwidth 25600 MB/sec 54400 MB/sec
Texel Rate 8800 Mtexels/sec 17600 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 32 96
Texture Mapping Units 16 32
Render Output Units 8 8
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 314 million 289 million
Bus PCIe x16 2.0, PCI PCIe x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

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