Radeon RX 6700 XT vs Radeon R9 390X
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 XT and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6700 XT Advantages
Released 5 years and 9 months late
Boost Clock2581MHz
More VRAM (12GB vs 8GB)
Lower TDP (230W vs 275W)
Radeon R9 390X Advantages
256 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6700 XT
+123%
13210
Radeon R9 390X
5914
3DMark Time Spy
Radeon RX 6700 XT
+200%
12804
Radeon R9 390X
4259
3DMark Time Spy Extreme
Radeon RX 6700 XT
+191%
5957
Radeon R9 390X
2041
Graphics Card
Mar 2021
Release Date
Jun 2015
Navi II
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
2321 MHz
Base Clock
-
2581 MHz
Boost Clock
-
2000 MHz
Memory Clock
1500 MHz
Memory
12GB
Memory Size
8GB
GDDR6
Memory Type
GDDR5
192bit
Memory Bus
512bit
384.0GB/s
Bandwidth
384.0GB/s
Render Config
40
Compute Units
44
2560
Shading Units
2816
160
TMUs
176
64
ROPs
64
40
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
3 MB
L2 Cache
1024 KB
96 MB
L3 Cache
-
Theoretical Performance
165.2 GPixel/s
Pixel Rate
67.20 GPixel/s
413.0 GTexel/s
Texture Rate
184.8 GTexel/s
26.43 TFLOPS
FP16 (half)
-
13.21 TFLOPS
FP32 (float)
5.914 TFLOPS
825.9 GFLOPS
FP64 (double)
739.2 GFLOPS
Board Design
230W
TDP
275W
550 W
Suggested PSU
600 W
1x HDMI 2.1
3x DisplayPort 1.4a
3x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x HDMI 1.4a
1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
Navi 22
GPU Name
Grenada
Navi 22 XT
(215-127000006)
(215-127000006)
GPU Variant
Grenada XT
(215-0880004)
(215-0880004)
RDNA 2.0
Architecture
GCN 2.0
TSMC
Foundry
TSMC
7 nm
Process Size
28 nm
17.2 billion
Transistors
6.2 billion
335 mm²
Die Size
438 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.0
1.3
Vulkan
1.2
6.5
Shader Model
6.3
