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GPU Comparison
AMD Radeon HD 8870 OEM vs AMD Radeon HD 8990 OEM
AMD Radeon HD 8870 OEM vs AMD Radeon HD 8990 OEM
VS
AMD Radeon HD 8870 OEM
AMD Radeon HD 8990 OEM
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 8870 OEM 's Advantages
Lower TDP (175W vs 375W)
AMD Radeon HD 8990 OEM 's Advantages
Boost Clock1000MHz
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 153.6GB/s)
768 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 8870 OEM
2.56 TFLOPS
Radeon HD 8990 OEM
+60%
4.096 TFLOPS
Radeon HD 8870 OEM
VS
Radeon HD 8990 OEM
Graphics Card
Jan 2013
Release Date
Apr 2013
Sea Islands
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
950 MHz
-
Boost Clock
1000 MHz
1200 MHz
Memory Clock
1500 MHz
Memory
2GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
153.6GB/s
Bandwidth
288.0GB/s
Render Config
-
SM Count
-
20
Compute Units
32
1280
Shading Units
2048
80
TMUs
128
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
768 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
32.00 GPixel/s
80.00 GTexel/s
Texture Rate
128.0 GTexel/s
-
FP16 (half)
-
2.560 TFLOPS
FP32 (float)
4.096 TFLOPS
160.0 GFLOPS
FP64 (double)
1024 GFLOPS
Graphics Processor
Pitcairn
GPU Name
Malta
Pitcairn XT (215-0828047)
GPU Variant
Malta XT (215-0849026)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
4.313 billion
212 mm²
Die Size
365 mm²
Board Design
175W
TDP
375W
450 W
Suggested PSU
750 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 4x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
2x 8-pin
Graphics Features
12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
5.1
Shader Model
5.1
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