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GeForce GT 340 1GB vs Radeon HD 7950

Intro

The GeForce GT 340 1GB features a core clock frequency of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It features 96 SPUs, 32 TAUs, and 8 ROPs.

Compare that to the Radeon HD 7950, which features GPU clock speed of 800 MHz, and 1536 MB of GDDR5 memory running at 1250 MHz through a 384-bit bus. It also is made up of 1792 Stream Processors, 112 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
Radeon HD 7950 200 Watts
Difference: 131 Watts (190%)

Memory Bandwidth

The Radeon HD 7950 should theoretically be quite a bit faster than the GeForce GT 340 1GB in general. (explain)

Radeon HD 7950 240000 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 185600 (341%)

Texel Rate

The Radeon HD 7950 is much (more or less 409%) better at AF than the GeForce GT 340 1GB. (explain)

Radeon HD 7950 89600 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 72000 (409%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7950 is a better choice, by far. (explain)

Radeon HD 7950 25600 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 21200 (482%)

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 340 1GB

Amazon.com

Check prices at:

Radeon HD 7950

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 340 1GB Radeon HD 7950
Manufacturer nVidia AMD
Year February 2010 January 2012
Code Name GT215 Tahiti Pro
Memory 1024 MB 1536 MB
Core Speed 550 MHz 800 MHz
Memory Speed 3400 MHz 5000 MHz
Power (Max TDP) 69 watts 200 watts
Bandwidth 54400 MB/sec 240000 MB/sec
Texel Rate 17600 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 96 1792
Texture Mapping Units 32 112
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 384-bit
Fab Process 40 nm 28 nm
Transistors 727 million 4313 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.1
OpenGL Version OpenGL 3.3 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 7950

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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