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GeForce GT 450 (OEM) vs Radeon HD 4870 1GB
Intro
The GeForce GT 450 (OEM) comes with core clock speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 memory. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.Compare those specifications to the Radeon HD 4870 1GB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. 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 450 (OEM) |
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106 Watts |
| Radeon HD 4870 1GB |
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150 Watts |
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Memory Bandwidth
Theoretically, the Radeon HD 4870 1GB should perform a little bit faster than the GeForce GT 450 (OEM) overall. (explain)
| Radeon HD 4870 1GB |
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115200 MB/sec |
| GeForce GT 450 (OEM) |
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96000 MB/sec |
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Texel Rate
The Radeon HD 4870 1GB will be much (more or less 58%) more effective at AF than the GeForce GT 450 (OEM). (explain)| Radeon HD 4870 1GB |
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30000 Mtexels/sec |
| GeForce GT 450 (OEM) |
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18960 Mtexels/sec |
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Pixel Rate
If running with a high screen resolution is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 4870 1GB, and very much so. (explain)| GeForce GT 450 (OEM) |
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18960 Mpixels/sec |
| Radeon HD 4870 1GB |
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12000 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 450 (OEM)Amazon.com
Check prices at:
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Radeon HD 4870 1GBAmazon.com
Check prices at:
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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 450 (OEM) | Radeon HD 4870 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | October 2010 | Jun 25, 2008 |
| Code Name | GF106 | RV770 XT |
| Memory | 1536 MB | 1024 MB |
| Core Speed | 790 MHz | 750 MHz |
| Memory Speed | 4000 MHz | 3600 MHz |
| Power (Max TDP) | 106 watts | 150 watts |
| Bandwidth | 96000 MB/sec | 115200 MB/sec |
| Texel Rate | 18960 Mtexels/sec | 30000 Mtexels/sec |
| Pixel Rate | 18960 Mpixels/sec | 12000 Mpixels/sec |
| Unified Shaders | 144 | 800(160x5) |
| Texture Mapping Units | 24 | 40 |
| Render Output Units | 24 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 192-bit | 256-bit |
| Fab Process | 40 nm | 55 nm |
| Transistors | 1170 million | 956 million |
| Bus | PCIe x16 | PCIe 2.0 x16 |
| DirectX Version | DirectX 11 | DirectX 10.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 3.0 |
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.
GeForce GT 450 (OEM)Amazon.com
Check prices at:
|
Radeon HD 4870 1GBAmazon.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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