Radeon HD 7950 and Radeon RX 7990 XTX - video card comparison
Radeon HD 7950
Radeon RX 7990 XTX
Architecture
GCN 1.0 (2012−2020)
RDNA 3.0 (2022)
GPU code name
Tahiti
Navi 31
Market segment
Desktop
Desktop
Release date
January 2012
2023
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 6-pin
3x 8-pin
Boost clock speed
1250 MHz
3599 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
4,313 million
57,700 million
Pipelines / CUDA cores
1792
6144
Power consumption (TDP)
200 Watt
405 Watt
Texture fill rate
89.60
1,382
Memory type
GDDR5
GDDR6
Maximum RAM amount
3 GB
24 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
1250 MHz
24 GB/s
Memory bandwidth
240 GB/s
1,152 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 Ultimate (12_2)
Mantle
-
-
OpenCL
1.2
2.2
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
-
1.3
AppAcceleration
+
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-