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GPU Comparison
ATI Radeon HD 4870 X2 vs AMD Radeon R9 390X
ATI Radeon HD 4870 X2 vs AMD Radeon R9 390X
VS
ATI Radeon HD 4870 X2
AMD Radeon R9 390X
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 390X 's Advantages
Released 6 years and 10 months late
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (384.0GB/s vs 115.2GB/s)
2016 additional rendering cores
Lower TDP (275W vs 286W)
Score
Benchmark
FP32 (float)
Radeon HD 4870 X2
1.2 TFLOPS
Radeon R9 390X
+392%
5.914 TFLOPS
Radeon HD 4870 X2
VS
Radeon R9 390X
Graphics Card
Aug 2008
Release Date
Jun 2015
Radeon R700
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
1500 MHz
Memory
1024MB
Memory Size
8GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
512bit
115.2GB/s
Bandwidth
384.0GB/s
Render Config
-
SM Count
-
10
Compute Units
44
800
Shading Units
2816
40
TMUs
176
16
ROPs
64
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
1024 KB
Theoretical Performance
12.00 GPixel/s
Pixel Rate
67.20 GPixel/s
30.00 GTexel/s
Texture Rate
184.8 GTexel/s
-
FP16 (half)
-
1200 GFLOPS
FP32 (float)
5.914 TFLOPS
240.0 GFLOPS
FP64 (double)
739.2 GFLOPS
Graphics Processor
R700
GPU Name
Grenada
R700 XT (215-0669045)
GPU Variant
Grenada XT (215-0880004)
TeraScale
Architecture
GCN 2.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.956 billion
Transistors
6.2 billion
256 mm²
Die Size
438 mm²
Board Design
286W
TDP
275W
600 W
Suggested PSU
600 W
2x DVI 1x S-Video
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Features
10.1 (10_1)
DirectX
12 (12_0)
3.3
OpenGL
4.6
1.1
OpenCL
2.0
N/A
Vulkan
1.2
-
CUDA
-
4.1
Shader Model
6.3
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