Radeon HD 8490 OEM and Radeon HD 7970 GHz Edition - video card comparison
Radeon HD 8490 OEM
Radeon HD 7970 GHz Edition
Architecture
TeraScale 2 (2009−2015)
GCN 1.0 (2012−2020)
GPU code name
Caicos
Tahiti
Market segment
Desktop
Desktop
Release date
July 2013
June 2012
Bus support
-
PCIe 2.1 x16
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin + 1x 8-pin
Boost clock speed
-
1050 MHz
Core clock speed
875 MHz
-
Floating-point performance
280.0 gflops
4,301 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
370 million
4,313 million
Pipelines / CUDA cores
160
2048
Power consumption (TDP)
35 Watt
250 Watt
Texture fill rate
7.000
134.4
Memory type
DDR3
GDDR5
Maximum RAM amount
1 GB
3 GB
Memory bus width
64 Bit
384 Bit
Memory clock speed
1800 MHz
1500 MHz
Memory bandwidth
14.4 GB/s
288 GB/s
Display Connectors
1x DVI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
-
1
HDMI
-
+
DisplayPort support
-
-
DirectX
11.2 (11_0)
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
FreeSync
-
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-