AMD Radeon RX 6800M vs AMD Radeon HD 6990
GPU · Specs Compare
Graphics Card
Release Date
May 2021
Mar 2011
Generation
Mobility Radeon
Northern Islands
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
2116 MHz
—
Boost Clock
2390 MHz
—
Memory Clock
2000 MHz
1250 MHz
Memory
Memory Size
12GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
256bit
Bandwidth
384.0GB/s
160.0GB/s
Render Config
Compute Units
40
24
Shading Units
2560
1536
TMUs
160
96
ROPs
64
32
RT Cores
40
—
L1 Cache
128 KB per Array
8 KB (per CU)
L2 Cache
3 MB
512 KB
L3 Cache
96 MB
—
Theoretical Performance
Pixel Rate
153.0 GPixel/s
26.56 GPixel/s
Texture Rate
382.4 GTexel/s
79.68 GTexel/s
FP16 (half)
24.47 TFLOPS
—
FP32 (float)
12.24 TFLOPS
2.550 TFLOPS
FP64 (double)
764.8 GFLOPS
637.4 GFLOPS
Graphics Processor
GPU Name
Navi 22
Antilles
GPU Variant
Navi 22 XTM
Antilles XT(215-0807027)
Architecture
RDNA 2.0
TeraScale 3
Foundry
TSMC
TSMC
Process Size
7 nm
40 nm
Transistors
17.2 billion
2.64 billion
Die Size
335 mm²
389 mm²
Board Design
TDP
145W
375W
Outputs
No outputs
1x DVI4x mini-DisplayPort 1.2
Power Connectors
None
2x 8-pin
Suggested PSU
—
750 W
Graphics Features
DirectX
12 Ultimate (12_2)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.1
1.2
Vulkan
1.3
N/A
Shader Model
6.5
5.0
Benchmark
3DMark Time Spy
11,498
—
3DMark Time Spy Extreme
5,418
—
3DMark Speed Way
2,096
—
Blender
1,568
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.