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GeForce GT 450 (OEM) vs Radeon HD 4870 1GB
Intro
The GeForce GT 450 (OEM) has a core clock speed of 790 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is made up of 144 SPUs, 24 Texture Address Units, and 24 ROPs.Compare those specifications to the Radeon HD 4870 1GB, which makes use of a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory runs at a speed of 900 MHz on this particular card. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.
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
The Radeon HD 4870 1GB, in theory, should be a little bit faster than the GeForce GT 450 (OEM) in general. (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 should be a lot (about 58%) more effective at anisotropic filtering 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 using a high resolution is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 4870 1GB, by a large margin. (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: Bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum 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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