GeForce GTX 590 and Radeon HD 4855 - video card comparison
GeForce GTX 590
Radeon HD 4855
Architecture
Fermi (2010−2014)
TeraScale (2005−2013)
GPU code name
GF110
RV770
Market segment
Desktop
Desktop
Release date
March 2011
January 2010
Bus support
16x PCI-E 2.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
Two 8-pin
1x 6-pin
SLI options
+
-
Core clock speed
607 MHz
575 MHz
CUDA cores
1024
-
Floating-point performance
2x 1,244.2 gflops
736.0 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
3,000 million
956 million
Pipelines / CUDA cores
1024
640
Power consumption (TDP)
365 Watt
110 Watt
Maximum GPU temperature
97 °C
-
Texture fill rate
77.7 billion/sec
18.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
3072 MB (1536 MB per GPU)
512 MB
Memory bus width
768-bit (384-bit per GPU)
256 Bit
Memory clock speed
1707 MHz
3600 MHz
Memory bandwidth
327.7 GB/s
115.2 GB/s
Shared memory
-
-
Display Connectors
Three Dual Link DVI-IMini DisplayPort
1x DVI, 1x HDMI, 1x VGA
Multi monitor support
+
-
HDMI
+
+
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
10.1 (10_1)
CUDA
+
-
OpenCL
1.1
1.1
OpenGL
4.2
3.3
Shader Model
5.1
4.1
Vulkan
N/A
N/A