Radeon HD 6990 vs P30PH
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 4GB VRAM P30PH to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
P30PH 's Advantages
Boost Clock1206MHz
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (268.8GB/s vs 160.0GB/s)
512 additional rendering cores
Lower TDP (180W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
2550
P30PH
+93%
4940
Graphics Card
Mar 2011
Release Date
Unknown
Northern Islands
Generation
Mining GPUs
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
1120 MHz
-
Boost Clock
1206 MHz
1250 MHz
Memory Clock
2100 MHz
Memory
2GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
160.0GB/s
Bandwidth
268.8GB/s
Render Config
24
Compute Units
32
1536
Shading Units
2048
96
TMUs
128
32
ROPs
32
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
2 MB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
38.59 GPixel/s
79.68 GTexel/s
Texture Rate
154.4 GTexel/s
-
FP16 (half)
4.940 TFLOPS
2.550 TFLOPS
FP32 (float)
4.940 TFLOPS
637.4 GFLOPS
FP64 (double)
308.7 GFLOPS
Board Design
375W
TDP
180W
750 W
Suggested PSU
450 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
1x HDMI 2.0b
2x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
Antilles
GPU Name
Polaris 20
Antilles XT
(215-0807027)
GPU Variant
-
TeraScale 3
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
40 nm
Process Size
14 nm
2.64 billion
Transistors
5.7 billion
389 mm²
Die Size
232 mm²
Graphics Features
11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.3
5.0
Shader Model
6.7
