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GeForce GT 340 1GB vs Radeon HD 7850

Intro

The GeForce GT 340 1GB makes use of a 40 nm design. nVidia has clocked the core speed at 550 MHz. The GDDR5 RAM is set to run at a frequency of 850 MHz on this particular model. It features 96 SPUs as well as 32 Texture Address Units and 8 ROPs.

Compare those specs to the Radeon HD 7850, which uses a 28 nm design. AMD has set the core speed at 860 MHz. The GDDR5 RAM runs at a frequency of 1200 MHz on this particular model. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
Radeon HD 7850 130 Watts
Difference: 61 Watts (88%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7850 should be a lot faster than the GeForce GT 340 1GB overall. (explain)

Radeon HD 7850 153600 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 99200 (182%)

Texel Rate

The Radeon HD 7850 is quite a bit (more or less 213%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

Radeon HD 7850 55040 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 37440 (213%)

Pixel Rate

The Radeon HD 7850 will be much (about 525%) better at FSAA than the GeForce GT 340 1GB, and will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 7850 27520 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 23120 (525%)

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 7850

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 7850
Manufacturer nVidia AMD
Year February 2010 March 2012
Code Name GT215 Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 550 MHz 860 MHz
Memory Speed 3400 MHz 4800 MHz
Power (Max TDP) 69 watts 130 watts
Bandwidth 54400 MB/sec 153600 MB/sec
Texel Rate 17600 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 96 1024
Texture Mapping Units 32 64
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 727 million 2800 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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 7850

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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