GeForce GTX 590 and GeForce GT 645 OEM - video card comparison
GeForce GTX 590
GeForce GT 645 OEM
Architecture
Fermi (2010−2014)
Fermi 2.0 (2010−2014)
GPU code name
GF110
GF114
Market segment
Desktop
Desktop
Release date
March 2011
April 2012
Bus support
16x PCI-E 2.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
Two 8-pin
-
SLI options
+
-
Core clock speed
607 MHz
776 MHz
CUDA cores
1024
-
Floating-point performance
2x 1,244.2 gflops
894.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
3,000 million
1,950 million
Pipelines / CUDA cores
1024
288
Power consumption (TDP)
365 Watt
102 Watt
Maximum GPU temperature
97 °C
-
Texture fill rate
77.7 billion/sec
37.25
Memory type
GDDR5
GDDR5
Maximum RAM amount
3072 MB (1536 MB per GPU)
1 GB
Memory bus width
768-bit (384-bit per GPU)
192 Bit
Memory clock speed
1707 MHz
3828 MHz
Memory bandwidth
327.7 GB/s
91.87 GB/s
Shared memory
-
-
Display Connectors
Three Dual Link DVI-IMini DisplayPort
2x DVI, 1x mini-HDMI
Multi monitor support
+
-
HDMI
+
+
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
2.1
OpenCL
1.1
1.1
OpenGL
4.2
4.6
Shader Model
5.1
5.1
Vulkan
N/A
N/A