Radeon R7 340 OEM vs Radeon HD 6790
We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 340 OEM and 1024MB VRAM Radeon HD 6790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon R7 340 OEM Advantages
Released 4 years and 1 months late
Boost Clock780MHz
More VRAM (2GB vs 1024GB)
Lower TDP (50W vs 150W)
Radeon HD 6790 Advantages
Larger VRAM bandwidth (134.4GB/s vs 64.00GB/s)
416 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon R7 340 OEM
599
Radeon HD 6790
+124%
1344
Graphics Card
May 2015
Release Date
Apr 2011
Pirate Islands
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 3.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
730 MHz
Base Clock
-
780 MHz
Boost Clock
-
1000 MHz
Memory Clock
1050 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
64.00GB/s
Bandwidth
134.4GB/s
Render Config
6
Compute Units
10
384
Shading Units
800
24
TMUs
40
8
ROPs
16
16 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
512 KB
Theoretical Performance
6.240 GPixel/s
Pixel Rate
13.44 GPixel/s
18.72 GTexel/s
Texture Rate
33.60 GTexel/s
599.0 GFLOPS
FP32 (float)
1344 GFLOPS
37.44 GFLOPS
FP64 (double)
-
Board Design
50W
TDP
150W
250 W
Suggested PSU
450 W
1x DVI
1x HDMI 1.4a
1x VGA
1x HDMI 1.4a
1x VGA
Outputs
2x DVI
1x HDMI 1.3a
1x DisplayPort 1.1
1x HDMI 1.3a
1x DisplayPort 1.1
None
Power Connectors
2x 6-pin
Graphics Processor
Oland
GPU Name
Barts
-
GPU Variant
Barts LE
(215-0798002)
(215-0798002)
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
0.95 billion
Transistors
1.7 billion
77 mm²
Die Size
255 mm²
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
5.1
Shader Model
5.0
