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GeForce GT 340 vs Radeon HD 7850

Intro

The GeForce GT 340 features core speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 memory. It features 96 SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Compare all of that to the Radeon HD 7850, which uses a 28 nm design. AMD has set the core speed at 860 MHz. The GDDR5 memory works at a speed of 1200 MHz on this particular card. It features 1024 SPUs along with 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 69 Watts
Radeon HD 7850 130 Watts
Difference: 61 Watts (88%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7850 should theoretically be much better than the GeForce GT 340 in general. (explain)

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

Texel Rate

The Radeon HD 7850 will be quite a bit (approximately 213%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

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

Pixel Rate

The Radeon HD 7850 will be much (about 525%) faster with regards to full screen anti-aliasing than the GeForce GT 340, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 7850 27520 Mpixels/sec
GeForce GT 340 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

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 Radeon HD 7850
Manufacturer nVidia AMD
Year February 2010 March 2012
Code Name GT215 Pitcairn Pro
Memory 512 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: Bandwidth is the largest amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GT 340

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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