 |
 |
Radeon HD 4870 1GB vs Radeon R9 380 2G
Intro
The Radeon HD 4870 1GB comes with a clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.Compare those specs to the Radeon R9 380 2G, which has core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 RAM. It features 1792 SPUs along with 112 TAUs and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4870 1GB |
|
150 Watts |
| Radeon R9 380 2G |
|
190 Watts |
|
|
Memory Bandwidth
In theory, the Radeon R9 380 2G should be 58% faster than the Radeon HD 4870 1GB in general, due to its greater bandwidth. (explain)
| Radeon R9 380 2G |
|
182400 MB/sec |
| Radeon HD 4870 1GB |
|
115200 MB/sec |
|
|
Texel Rate
The Radeon R9 380 2G is much (about 262%) more effective at texture filtering than the Radeon HD 4870 1GB. (explain)| Radeon R9 380 2G |
|
108640 Mtexels/sec |
| Radeon HD 4870 1GB |
|
30000 Mtexels/sec |
|
|
Pixel Rate
If running with a high resolution is important to you, then the Radeon R9 380 2G is superior to the Radeon HD 4870 1GB, and very much so. (explain)| Radeon R9 380 2G |
|
31040 Mpixels/sec |
| Radeon HD 4870 1GB |
|
12000 Mpixels/sec |
|
|
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
Radeon HD 4870 1GBAmazon.com
Check prices at:
|
Radeon R9 380 2GAmazon.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
| Model | Radeon HD 4870 1GB | Radeon R9 380 2G |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | June 2015 |
| Code Name | RV770 XT | Antigua PRO |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 750 MHz | 970 MHz |
| Memory Speed | 3600 MHz | 5700 MHz |
| Power (Max TDP) | 150 watts | 190 watts |
| Bandwidth | 115200 MB/sec | 182400 MB/sec |
| Texel Rate | 30000 Mtexels/sec | 108640 Mtexels/sec |
| Pixel Rate | 12000 Mpixels/sec | 31040 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1792 |
| Texture Mapping Units | 40 | 112 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 55 nm | 28 nm |
| Transistors | 956 million | 5000 million |
| Bus | PCIe 2.0 x16 | PCIe 3.0 ×16 |
| DirectX Version | DirectX 10.1 | DirectX 12.0 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.5 |
Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.
Radeon HD 4870 1GBAmazon.com
Check prices at:
|
Radeon R9 380 2GAmazon.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.
|
Comments
Be the first to leave a comment!