Home GPU Comparison AMD Radeon HD 7990 vs AMD Radeon R7 250

AMD Radeon HD 7990 vs AMD Radeon R7 250

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1024MB VRAM Radeon R7 250 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages
Boost Clock1000MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (288.0GB/s vs 28.80GB/s)
1536 additional rendering cores
AMD Radeon R7 250 's Advantages
Released 6 months late
Lower TDP (55W vs 375W)

Score

Benchmark

FP32 (float)
Radeon HD 7990 +471%
4.096 TFLOPS
Radeon R7 250
0.717 TFLOPS
VS

Graphics Card

Apr 2013
Release Date
Oct 2013
Southern Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

950 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
900 MHz

Memory

3GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
384bit
Memory Bus
128bit
288.0GB/s
Bandwidth
28.80GB/s

Render Config

32
Compute Units
8
-
-
-
2048
Shading Units
512
128
TMUs
32
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

32.00 GPixel/s
Pixel Rate
11.20 GPixel/s
128.0 GTexel/s
Texture Rate
22.40 GTexel/s
-
-
-
4.096 TFLOPS
FP32 (float)
716.8 GFLOPS
1024 GFLOPS
FP64 (double)
44.80 GFLOPS

Board Design

375W
TDP
55W
750 W
Suggested PSU
250 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 8-pin
Power Connectors
None

Graphics Processor

Malta
GPU Name
Cape Verde
Malta XT (215-0849026)
GPU Variant
Cape Verde PRO
GCN 1.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
1.5 billion
365 mm²
Die Size
123 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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