Radeon HD 7990 and Radeon RX 7900 XT - video card comparison
Passmark - benchmark score Radeon HD 7990 vs Radeon RX 7900 XT
Radeon HD 7990
5732
Radeon RX 7900 XT
29720
Radeon HD 7990
Radeon RX 7900 XT
Architecture
GCN 1.0 (2012−2020)
RDNA 3
GPU code name
Malta
Navi 31 XT
Market segment
Desktop
Desktop
Release date
April 2013
November 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
2x 8-pin
2x 8-pin
Boost clock speed
1000 MHz
2000 MHz
Core clock speed
950 MHz
-
Floating-point performance
2x 4,096 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
4,313 million
57,700 million
Pipelines / CUDA cores
2048
5376
Power consumption (TDP)
375 Watt
315 Watt
Texture fill rate
128.0
804.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
3 GB
20 GB
Memory bus width
384 Bit
320 Bit
Memory clock speed
6000 MHz
20000 MHz
Memory bandwidth
288.0 GB/s
800.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 4x mini-DisplayPort
1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C
HDMI
-
+
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
1.2.131
1.3