AMD Radeon R7 250 OEM vs AMD Radeon HD 7990
We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 250 OEM 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 R7 250 OEM 's Advantages
Released 6 months late
Boost Clock has increased by 5% (1050MHz vs 1000MHz)
Lower TDP (65W vs 375W)
AMD Radeon HD 7990 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 32.00GB/s)
1664 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon R7 250 OEM
0.806 TFLOPS
Radeon HD 7990
+408%
4.096 TFLOPS
Graphics Card
Oct 2013
Release Date
Apr 2013
Volcanic Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
1000 MHz
Base Clock
950 MHz
1050 MHz
Boost Clock
1000 MHz
1000 MHz
Memory Clock
1500 MHz
Memory
2GB
Memory Size
3GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
384bit
32.00GB/s
Bandwidth
288.0GB/s
Render Config
6
Compute Units
32
-
-
-
384
Shading Units
2048
24
TMUs
128
8
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
768 KB
-
-
-
Theoretical Performance
8.400 GPixel/s
Pixel Rate
32.00 GPixel/s
25.20 GTexel/s
Texture Rate
128.0 GTexel/s
-
-
-
806.4 GFLOPS
FP32 (float)
4.096 TFLOPS
50.40 GFLOPS
FP64 (double)
1024 GFLOPS
Board Design
65W
TDP
375W
250 W
Suggested PSU
750 W
1x DVI
1x HDMI 1.4a
1x VGA
Outputs
1x DVI
4x mini-DisplayPort 1.2
None
Power Connectors
2x 8-pin
Graphics Processor
Oland
GPU Name
Malta
Oland XT
(215-0837000)
GPU Variant
Malta XT
(215-0849026)
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
0.95 billion
Transistors
4.313 billion
77 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
