Over 20 years of PC history
Reference RV790 Board | Sapphire Radeon HD 4890 OC | |
---|---|---|
GPU type | RV790 | RV790 |
Manufacturing process | 55 nm | 55 nm |
Transistors | 959 million | 959 million |
Die size | 282 mm2 | 282 mm2 |
ROPs | 16 | 16 |
TMUs | 40 | 40 |
PS / VS | Unified Shaders | - / - | 800 | - / - | 800 |
GPU clock | 850 MHz | 900 MHz (1.06×) |
Pixel / texel fillrate | 13 600 MP/s ; 34 000 MT/s | 14 400 MP/s (1.08×) ; 36 000 MT/s (1.06×) |
SP / DP gigaflops | 1 360 ; 272 | 1 440 ; 288 (1.06×) |
DirectX / OpenGL | 10.1 ; 3.3 | 10.1 ; 3.3 |
CUDA / OpenCL | - ; 1.0 | - ; 1.0 |
Memory | 1 024 MB GDDR5 | 1 024 MB GDDR5 |
Memory | 3 900 MHz ; 256 bit | 4 000 MHz (1.33×) ; 256 bit |
Bandwith | 124 800 MB/s | 128 000 MB/s (1.03×) |
Interface | PCI-E 2.0 x16 [8 192 MB/s] | PCI-E 2.0 x16 [8 192 MB/s] |
TDP | 190 W | 190 W |
Analog I/O ports | 1 × S-Video out, 2 × DVI-I | 1 × S-Video out, 2 × DVI-I |
Digital I/O ports | 2 × DVI-I | 2 × DVI-I |
Independent screens | 2 | 2 |
Introduce date | 2009 | 2009 |