GPU Comparison
RADEON
AMD Radeon 680M
CORE STATE
Rembrandt+
VRAM
System Shared
CLOCK SPEED
2200 MHz
TDP
50 W
BUS WIDTH
System Shared
ARCHITECTURE
RDNA 2.0
PROCESS
6 nm
LAUNCH DATE
2023
VS
RADEON
Radeon RX 6900 XT
CORE STATE
Navi 21
VRAM
16 GB
CLOCK SPEED
2250 MHz
TDP
300 W
BUS WIDTH
256 bit
ARCHITECTURE
RDNA 2.0
PROCESS
7 nm
LAUNCH DATE
2020
PERFORMANCE BENCHMARKS
3dmark_3dmark_steel_nomad_dx12
geekbench_opencl
geekbench_vulkan
geekbench_metal
passmark_directx_10
passmark_directx_11
passmark_directx_12
passmark_directx_9
passmark_g2d
passmark_g3d
passmark_gpu_compute
DETAILED SPECIFICATIONS
SPECIFICATION
680M
RX 6900 XT
Core Specs
Shading Units
768
5,120
+566.7%
Shaders
768
5,120
+566.7%
TMUs
48
320
+566.7%
ROPs
32
128
+300.0%
Compute Units
12
80
+566.7%
Clocks
Base Clock
2000 MHz
1825 MHz
Boost Clock
2200 MHz
2250 MHz
Game Clock
—
2015 MHz
Memory Clock
System Shared
2000 MHz
16 Gbps effective
Memory
Memory Size
System Shared
16 GB
VRAM (MB)
—
16,384
Memory Type
System Shared
GDDR6
Memory Bus
System Shared
256 bit
Bandwidth
System Dependent
512.0 GB/s
Cache
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
2 MB
4 MB
L3 Cache
—
128 MB
L0 Cache
32 KB per WGP
32 KB per WGP
Performance
Pixel Rate
70.40 GPixel/s
288.0 GPixel/s
Texture Rate
105.6 GTexel/s
720.0 GTexel/s
FP32 (TFLOPS)
3.379 TFLOPS
23.04 TFLOPS
FP64 (TFLOPS)
211.2 GFLOPS (1:16)
1,440.0 GFLOPS (1:16)
FP16 (TFLOPS)
6.758 TFLOPS (2:1)
46.08 TFLOPS (2:1)
AI/RT
RT Cores
12
80
+566.7%
Power
TDP
50 W
300 W
TDP (W)
50
300
+500.0%
Suggested PSU
—
700 W
Power Connectors
None
2x 8-pin
Architecture
Architecture
RDNA 2.0
RDNA 2.0
GPU Name
Rembrandt+
Navi 21
Generation
Navi II IGP
(Rembrandt Mobile)
Navi II
(RX 6000)
Process Size
6 nm
7 nm
Transistors
13,100 million
26,800 million
Die Size
208 mm²
520 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
51.5M / mm²
API Support
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.4
1.4
OpenCL
2.0
2.1
Shader Model
6.8
6.8
Physical
Slot Width
IGP
Triple-slot
Length
—
267 mm
10.5 inches
Height
—
120 mm
4.7 inches
Outputs
Portable Device Dependent
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x16
Other
Launch Price
—
999 USD
Production
Active
End-of-life
Predecessor
Vega II IGP
Navi
Successor
Navi III IGP
Navi III