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GeForce GT 340 1GB vs Radeon HD 4830 512MB

Intro

The GeForce GT 340 1GB comes with a GPU core speed of 550 MHz, and the 1024 MB of GDDR5 memory is set to run at 850 MHz through a 128-bit bus. It also features 96 SPUs, 32 TAUs, and 8 ROPs.

Compare all of that to the Radeon HD 4830 512MB, which comes with core speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
Radeon HD 4830 512MB 95 Watts
Difference: 26 Watts (38%)

Memory Bandwidth

Performance-wise, the Radeon HD 4830 512MB should theoretically be just a bit better than the GeForce GT 340 1GB in general. (explain)

Radeon HD 4830 512MB 57600 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 3200 (6%)

Texel Rate

The Radeon HD 4830 512MB will be just a bit (approximately 5%) more effective at texture filtering than the GeForce GT 340 1GB. (explain)

Radeon HD 4830 512MB 18400 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 800 (5%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 4830 512MB is superior to the GeForce GT 340 1GB, and very much so. (explain)

Radeon HD 4830 512MB 9200 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 4800 (109%)

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 4830 512MB

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 4830 512MB
Manufacturer nVidia AMD
Year February 2010 Oct 21, 2008
Code Name GT215 RV770 LE
Memory 1024 MB 512 MB
Core Speed 550 MHz 575 MHz
Memory Speed 3400 MHz 1800 MHz
Power (Max TDP) 69 watts 95 watts
Bandwidth 54400 MB/sec 57600 MB/sec
Texel Rate 17600 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 96 640(128x5)
Texture Mapping Units 32 32
Render Output Units 8 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 727 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its 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 the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 4830 512MB

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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