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GeForce GT 340 1GB vs Radeon HD 4870 2GB
Intro
The GeForce GT 340 1GB comes with a GPU clock speed of 550 MHz, and the 1024 MB of GDDR5 memory runs 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 4870 2GB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 340 1GB |
|
69 Watts |
| Radeon HD 4870 2GB |
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150 Watts |
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Memory Bandwidth
The Radeon HD 4870 2GB, in theory, should perform quite a bit faster than the GeForce GT 340 1GB overall. (explain)
| Radeon HD 4870 2GB |
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115200 MB/sec |
| GeForce GT 340 1GB |
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54400 MB/sec |
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Texel Rate
The Radeon HD 4870 2GB should be much (more or less 70%) faster with regards to anisotropic filtering than the GeForce GT 340 1GB. (explain)| Radeon HD 4870 2GB |
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30000 Mtexels/sec |
| GeForce GT 340 1GB |
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17600 Mtexels/sec |
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Pixel Rate
If running with a high resolution is important to you, then the Radeon HD 4870 2GB is a better choice, by far. (explain)| Radeon HD 4870 2GB |
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12000 Mpixels/sec |
| GeForce GT 340 1GB |
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4400 Mpixels/sec |
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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
GeForce GT 340 1GBAmazon.com
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Radeon HD 4870 2GBAmazon.com
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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
| Model | GeForce GT 340 1GB | Radeon HD 4870 2GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | February 2010 | Jun 25, 2008 |
| Code Name | GT215 | RV770 XT |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 550 MHz | 750 MHz |
| Memory Speed | 3400 MHz | 3600 MHz |
| Power (Max TDP) | 69 watts | 150 watts |
| Bandwidth | 54400 MB/sec | 115200 MB/sec |
| Texel Rate | 17600 Mtexels/sec | 30000 Mtexels/sec |
| Pixel Rate | 4400 Mpixels/sec | 12000 Mpixels/sec |
| Unified Shaders | 96 | 800(160x5) |
| Texture Mapping Units | 32 | 40 |
| Render Output Units | 8 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| 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 maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, 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 number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on 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 memory bandwidth is, the lower the potential to reach the max fill rate.
GeForce GT 340 1GBAmazon.com
Check prices at:
|
Radeon HD 4870 2GBAmazon.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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