Home GPU Comparison AMD Radeon HD 7850 vs AMD Radeon HD 7990

AMD Radeon HD 7850 vs AMD Radeon HD 7990

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7850 and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7850 's Advantages
Lower TDP (130W vs 375W)
AMD Radeon HD 7990 's Advantages
Released 1 years and 1 months late
Boost Clock1000MHz
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 153.6GB/s)
1024 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 7850
1.761 TFLOPS
Radeon HD 7990 +132%
4.096 TFLOPS
VS

Graphics Card

Mar 2012
Release Date
Apr 2013
Southern Islands
Generation
Southern 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

16
Compute Units
32
-
-
-
1024
Shading Units
2048
64
TMUs
128
32
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
768 KB
-
-
-

Theoretical Performance

27.52 GPixel/s
Pixel Rate
32.00 GPixel/s
55.04 GTexel/s
Texture Rate
128.0 GTexel/s
-
-
-
1.761 TFLOPS
FP32 (float)
4.096 TFLOPS
110.1 GFLOPS
FP64 (double)
1024 GFLOPS

Board Design

130W
TDP
375W
300 W
Suggested PSU
750 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 4x mini-DisplayPort 1.2
1x 6-pin
Power Connectors
2x 8-pin

Graphics Processor

Pitcairn
GPU Name
Malta
Pitcairn PRO (215-0828062)
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

Graphics Features

12 (11_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
1.2
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
5.1

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