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GPU Comparison
AMD Radeon HD 7990 vs AMD Radeon HD 6850 1440SP Edition
AMD Radeon HD 7990 vs AMD Radeon HD 6850 1440SP Edition
VS
AMD Radeon HD 7990
AMD Radeon HD 6850 1440SP Edition
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1024MB VRAM Radeon HD 6850 1440SP Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7990 's Advantages
Released 8 months late
Boost Clock1000MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (288.0GB/s vs 128.0GB/s)
608 additional rendering cores
AMD Radeon HD 6850 1440SP Edition 's Advantages
Lower TDP (151W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 7990
+96%
4.096 TFLOPS
Radeon HD 6850 1440SP Edition
2.088 TFLOPS
Radeon HD 7990
VS
Radeon HD 6850 1440SP Edition
Graphics Card
Apr 2013
Release Date
Aug 2012
Southern Islands
Generation
Northern Islands
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
1000 MHz
Memory
3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
256bit
288.0GB/s
Bandwidth
128.0GB/s
Render Config
-
SM Count
-
32
Compute Units
18
2048
Shading Units
1440
128
TMUs
72
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
768 KB
L2 Cache
512 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
23.20 GPixel/s
128.0 GTexel/s
Texture Rate
52.20 GTexel/s
-
FP16 (half)
-
4.096 TFLOPS
FP32 (float)
2.088 TFLOPS
1024 GFLOPS
FP64 (double)
417.6 GFLOPS
Graphics Processor
Malta
GPU Name
Cypress
Malta XT (215-0849026)
GPU Variant
Cypress PRO (215-0735043)
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
2.154 billion
365 mm²
Die Size
334 mm²
Board Design
375W
TDP
151W
750 W
Suggested PSU
450 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
2x 8-pin
Power Connectors
2x 6-pin
Graphics Features
12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
5.0
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