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GPU Comparison
AMD Radeon HD 8990 OEM vs ATI Radeon HD 4850 X2
AMD Radeon HD 8990 OEM vs ATI Radeon HD 4850 X2
VS
AMD Radeon HD 8990 OEM
ATI Radeon HD 4850 X2
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 OEM and 512MB VRAM Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 8990 OEM 's Advantages
Released 4 years and 5 months late
Boost Clock1000MHz
Larger VRAM bandwidth (288.0GB/s vs 63.68GB/s)
1248 additional rendering cores
ATI Radeon HD 4850 X2 's Advantages
Lower TDP (250W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 8990 OEM
+309%
4.096 TFLOPS
Radeon HD 4850 X2
1 TFLOPS
Radeon HD 8990 OEM
VS
Radeon HD 4850 X2
Graphics Card
Apr 2013
Release Date
Nov 2008
Sea Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
950 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
995 MHz
Memory
3GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
63.68GB/s
Render Config
-
SM Count
-
32
Compute Units
10
2048
Shading Units
800
128
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
10.00 GPixel/s
128.0 GTexel/s
Texture Rate
25.00 GTexel/s
-
FP16 (half)
-
4.096 TFLOPS
FP32 (float)
1000 GFLOPS
1024 GFLOPS
FP64 (double)
200.0 GFLOPS
Graphics Processor
Malta
GPU Name
R700
Malta XT (215-0849026)
GPU Variant
R700 PRO (215-0669065)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.956 billion
365 mm²
Die Size
256 mm²
Board Design
375W
TDP
250W
750 W
Suggested PSU
600 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
4x DVI 1x S-Video
2x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.1
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6
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