Radeon RX 6800 XT vs Radeon RX 6900 XT Speedster MERC 319
Radeon RX 6800 XT
Radeon RX 6900 XT Speedster MERC 319
$730
|
4608 Shaders
16GB GDDR6
2250MHz
|
5120 Shaders
16GB GDDR6
2365MHz
|
|
FP32
20.74 TFLOPS
|
FP32
24.22 TFLOPS
|
|
FP16
41.47 TFLOPS
|
FP16
48.44 TFLOPS
|
|
Form Factor
PCIe Card
2.5-Slots
|
Form Factor
PCIe Card
2.8-Slots
|
|
TDP
300W
|
TDP
350W
|
|
Power Connectors
-
2x 8-Pin
-
-
|
Power Connectors
-
2x 8-Pin
-
-
|
|
GB5 OpenCL 156,955
51%
|
GB5 OpenCL 173,555
57%
|
|
GB5 CUDA - N/A
0%
|
GB5 CUDA - N/A
0%
|
|
GB5 Metal 149,520
83%
|
GB5 Metal 170,855
95%
|
|
GB5 Vulkan 100,755
49%
|
GB5 Vulkan 119,870
58%
|
|
OCT 2020.1 - N/A
0%
|
OCT 2020.1 - N/A
0%
|
|
OCT Metal 355
60%
|
OCT Metal 405
69%
|
|
Manufacturer
AMD
|
Manufacturer
XFX
|
|
Chip Designer
AMD
|
Chip Designer
AMD
|
|
Architecture
RDNA 2
|
Architecture
RDNA 2
|
|
Family
Radeon RX 6000
|
Family
Radeon RX 6000
|
|
Codename
Sienna Cichlid
Navi 21
Variant
Navi 21 XT
|
Codename
Sienna Cichlid
Navi 21
Variant
Navi 21 XTX
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
11/18/2020
|
Release Date
12/8/2020
|
|
Foundry
TSMC
-
|
Foundry
TSMC
-
|
|
Fabrication Node
N7
-
|
Fabrication Node
N7
-
|
|
Die Size
520 mm²
-
|
Die Size
520 mm²
-
|
|
Transistor Count
26.8 Billion
-
|
Transistor Count
26.8 Billion
-
|
|
Transistor Density
51.56M/mm²
-
|
Transistor Density
51.56M/mm²
-
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
4608 Shaders
-
|
Shading Units
5120 Shaders
-
|
|
Texture Mapping Units
288 TMUs
|
Texture Mapping Units
320 TMUs
|
|
Render Output Units
128 ROPs
|
Render Output Units
128 ROPs
|
|
-
-
|
-
-
|
|
Ray-Tracing Cores
72 RT-Cores
|
Ray-Tracing Cores
80 RT-Cores
|
|
-
-
|
-
-
|
|
Compute Units
72 CUs
|
Compute Units
80 CUs
|
|
-
-
|
-
-
|
|
Graphics Processing Clusters
4 GPCs
|
Graphics Processing Clusters
4 GPCs
|
|
-
-
1825MHz Base
2250MHz
|
-
-
1950MHz Base
2365MHz
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
FP16
41.47 TFLOPS
-
|
FP16
48.44 TFLOPS
-
|
|
-
-
-
|
-
-
-
|
|
FP32
20.74 TFLOPS
|
FP32
24.22 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
1.3 TFLOPS
-
|
FP64
1.51 TFLOPS
-
|
|
-
-
|
-
-
|
|
-
-
-
|
-
-
-
|
|
Pixel Fillrate
288 GPixel/s
|
Pixel Fillrate
302.72 GPixel/s
|
|
-
-
|
-
-
|
|
Texture Fillrate
648 GTexel/s
|
Texture Fillrate
756.8 GTexel/s
|
|
L0
32KB/WGP
|
L0
32KB/WGP
|
|
L1
-
-
-
128KB/Array
|
L1
-
-
-
128KB/Array
|
|
L2
4MB Shared
|
L2
4MB Shared
|
|
L3
128MB Shared
1.66TB/s
|
L3
128MB Shared
1.66TB/s
|
|
16GB
GDDR6
-
|
16GB
GDDR6
-
|
|
Bus Width
256Bit
|
Bus Width
256Bit
|
|
Clock
2000MHz
Transfer Rate
16GT/s
Bandwidth
512GB/s
|
Clock
2000MHz
Transfer Rate
16GT/s
Bandwidth
512GB/s
|
|
-
-
-
-
-
-
-
-
-
|
-
-
-
-
-
-
-
-
-
|
|
TDP
300W
|
TDP
350W
|
|
Temp
110°C Max
|
Temp
110°C Max
|
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2x DisplayPort 1.4
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 2.1
1x USB-C + DP
-
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2x DisplayPort 1.4
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 2.1
1x USB-C + DP
-
|
|
Max Resolution
7680x4320
|
Max Resolution
7680x4320
|
|
Max Resolution Refresh Rate
120Hz
|
Max Resolution Refresh Rate
120Hz
|
|
Variable Refresh Rate
-
FreeSync
-
|
Variable Refresh Rate
-
FreeSync
-
|
|
Display Stream Compression (DSC)
Supported
|
Display Stream Compression (DSC)
Supported
|
|
Multi Monitor Support
4
|
Multi Monitor Support
4
|
|
Content Protection
HDCP 2.3
|
Content Protection
HDCP 2.3
|
|
Model
VCN 3.0
|
Model
VCN 3.0
|
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
|
Codec
-
-
-
-
-
-
-
-
AVC (H.264)
HEVC (H.265)
-
-
-
-
|
|
Model
VCN 3.0
|
Model
VCN 3.0
|
|
Codec
MPEG-1
MPEG-2
MPEG-4
JPEG
VC-1
-
VP9
-
AVC (H.264)
HEVC (H.265)
-
AV1
-
-
|
Codec
MPEG-1
MPEG-2
MPEG-4
JPEG
VC-1
-
VP9
-
AVC (H.264)
HEVC (H.265)
-
AV1
-
-
|
|
Direct X
12
Direct 3D
12_2
|
Direct X
12
Direct 3D
12_2
|
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
|
Shader Model
6.5
-
-
GFX
10.3
-
-
-
-
|
Shader Model
6.5
-
-
GFX
10.3
-
-
-
-
|
|
-
-
-
3x Fans
|
-
-
-
3x Fans
|
|
Power Connectors
-
-
-
2x 8-Pin
-
-
-
|
Power Connectors
-
-
-
2x 8-Pin
-
-
-
|
|
Slots Required
2.5
PCIe Version
4.0
PCIe Lanes
16
|
Slots Required
2.8
PCIe Version
4.0
PCIe Lanes
16
|
|
Multi GPU Support
Supported
Type
Bridgeless
|
Multi GPU Support
Supported
Type
Bridgeless
|
|
Height
120 mm (4.72 in)
Width
267 mm (10.51 in)
Depth
50 mm (1.97 in)
|
Height
139 mm (5.47 in)
Width
340 mm (13.39 in)
Depth
57 mm (2.24 in)
|
Copy Link