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GPU Comparison
ATI Radeon HD 4855 vs AMD Radeon HD 8990 OEM
ATI Radeon HD 4855 vs AMD Radeon HD 8990 OEM
VS
ATI Radeon HD 4855
AMD Radeon HD 8990 OEM
We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4855 and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
ATI Radeon HD 4855 's Advantages
Lower TDP (110W vs 375W)
AMD Radeon HD 8990 OEM 's Advantages
Released 3 years and 3 months late
Boost Clock1000MHz
Larger VRAM bandwidth (288.0GB/s vs 115.2GB/s)
1408 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 4855
0.736 TFLOPS
Radeon HD 8990 OEM
+456%
4.096 TFLOPS
Radeon HD 4855
VS
Radeon HD 8990 OEM
Graphics Card
Jan 2010
Release Date
Apr 2013
Radeon R700
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
950 MHz
-
Boost Clock
1000 MHz
900 MHz
Memory Clock
1500 MHz
Memory
512MB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
115.2GB/s
Bandwidth
288.0GB/s
Render Config
-
SM Count
-
8
Compute Units
32
640
Shading Units
2048
32
TMUs
128
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
Theoretical Performance
9.200 GPixel/s
Pixel Rate
32.00 GPixel/s
18.40 GTexel/s
Texture Rate
128.0 GTexel/s
-
FP16 (half)
-
736.0 GFLOPS
FP32 (float)
4.096 TFLOPS
147.2 GFLOPS
FP64 (double)
1024 GFLOPS
Graphics Processor
RV770
GPU Name
Malta
RV770 PRO (215-0669065)
GPU Variant
Malta XT (215-0849026)
TeraScale
Architecture
GCN 1.0
TSMC
Foundry
TSMC
55 nm
Process Size
28 nm
0.956 billion
Transistors
4.313 billion
256 mm²
Die Size
365 mm²
Board Design
110W
TDP
375W
300 W
Suggested PSU
750 W
1x DVI 1x HDMI 1.3a 1x VGA
Outputs
1x DVI 4x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 8-pin
Graphics Features
10.1 (10_1)
DirectX
12 (11_1)
3.3
OpenGL
4.6
1.1
OpenCL
1.2
N/A
Vulkan
1.2
-
CUDA
-
4.1
Shader Model
5.1
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