GPU Comparison
RADEON
AMD Radeon HD 8790M
CORE STATE
Mars
VRAM
2 GB
CLOCK SPEED
900 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2013
VS
RADEON
Radeon RX 550X
CORE STATE
Lexa
VRAM
4 GB
CLOCK SPEED
1183 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2018
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 8790M
RX 550X
Core Specs
Shading Units
384
512
+33.3%
Shaders
384
512
+33.3%
TMUs
24
32
+33.3%
ROPs
8
16
+100.0%
Compute Units
6
8
+33.3%
Clocks
Base Clock
850 MHz
1100 MHz
Boost Clock
900 MHz
1183 MHz
Memory Clock
1000 MHz
4 Gbps effective
1500 MHz
6 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
64.00 GB/s
96.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
512 KB
Performance
Pixel Rate
7.200 GPixel/s
18.93 GPixel/s
Texture Rate
21.60 GTexel/s
37.86 GTexel/s
FP32 (TFLOPS)
691.2 GFLOPS
1,211.4 GFLOPS
FP64 (TFLOPS)
43.20 GFLOPS (1:16)
75.71 GFLOPS (1:16)
FP16 (TFLOPS)
—
1,211.4 GFLOPS (1:1)
Power
TDP
—
50 W
TDP (W)
—
50
Suggested PSU
—
250 W
Power Connectors
None
None
Architecture
Architecture
GCN 1.0
GCN 4.0
GPU Name
Mars
Lexa
Generation
Solar System
(HD 8700M)
Polaris
(RX 500X)
Process Size
28 nm
14 nm
Transistors
950 million
2,200 million
Die Size
77 mm²
103 mm²
Foundry
TSMC
GlobalFoundries
Density
12.3M / mm²
21.4M / mm²
API Support
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.3
OpenCL
2.1 (1.2)
2.1
Shader Model
6.5 (5.1)
6.7
Physical
Slot Width
MXM Module
Dual-slot
Length
—
145 mm
5.7 inches
Outputs
Portable Device Dependent
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Bus Interface
MXM-A (3.0)
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
London
Polaris
Successor
Gem System
Vega