AMD Radeon R9 390 X2 vs NVIDIA T400
We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 X2 and 2GB VRAM T400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 390 X2 's Advantages
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (345.6GB/s vs 80.00GB/s)
2176 additional rendering cores
NVIDIA T400 's Advantages
Released 5 years and 8 months late
Boost Clock1425MHz
Lower TDP (30W vs 580W)
Score
Benchmark
FP32 (float)
Radeon R9 390 X2
+368%
5.12 TFLOPS
T400
1.094 TFLOPS
Graphics Card
Sep 2015
Release Date
May 2021
Pirate Islands
Generation
Quadro
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
420 MHz
-
Boost Clock
1425 MHz
1350 MHz
Memory Clock
1250 MHz
Memory
8GB
Memory Size
2GB
GDDR5
Memory Type
GDDR6
512bit
Memory Bus
64bit
345.6GB/s
Bandwidth
80.00GB/s
Render Config
40
Compute Units
-
-
SM Count
6
2560
Shading Units
384
160
TMUs
24
64
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
64 KB (per SM)
1024 KB
L2 Cache
1024 KB
-
-
-
Theoretical Performance
64.00 GPixel/s
Pixel Rate
22.80 GPixel/s
160.0 GTexel/s
Texture Rate
34.20 GTexel/s
-
FP16 (half)
2.189 TFLOPS
5.120 TFLOPS
FP32 (float)
1094 GFLOPS
640.0 GFLOPS
FP64 (double)
34.20 GFLOPS
Board Design
580W
TDP
30W
950 W
Suggested PSU
200 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
3x mini-DisplayPort 1.4a
4x 8-pin
Power Connectors
None
Graphics Processor
Grenada
GPU Name
TU117
Grenada PRO
(215-0880030)
GPU Variant
-
GCN 2.0
Architecture
Turing
TSMC
Foundry
TSMC
28 nm
Process Size
12 nm
6.2 billion
Transistors
4.7 billion
438 mm²
Die Size
200 mm²
Graphics Features
12 (12_0)
DirectX
12 (12_1)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.3
-
CUDA
7.5
6.3
Shader Model
6.6
