Home GPU Comparison AMD Radeon HD 7790 vs AMD Radeon R7 265

AMD Radeon HD 7790 vs AMD Radeon R7 265

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7790 and 2GB VRAM Radeon R7 265 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7790 's Advantages
Lower TDP (85W vs 150W)
AMD Radeon R7 265 's Advantages
Released 11 months late
Boost Clock925MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (179.2GB/s vs 96.00GB/s)
128 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon HD 7790
1.792 TFLOPS
Radeon R7 265 +5%
1.894 TFLOPS
VS

Graphics Card

Mar 2013
Release Date
Feb 2014
Southern Islands
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

-
Base Clock
900 MHz
-
Boost Clock
925 MHz
1500 MHz
Memory Clock
1400 MHz

Memory

1024MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
96.00GB/s
Bandwidth
179.2GB/s

Render Config

14
Compute Units
16
-
-
-
896
Shading Units
1024
56
TMUs
64
16
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

16.00 GPixel/s
Pixel Rate
29.60 GPixel/s
56.00 GTexel/s
Texture Rate
59.20 GTexel/s
-
-
-
1.792 TFLOPS
FP32 (float)
1.894 TFLOPS
112.0 GFLOPS
FP64 (double)
118.4 GFLOPS

Board Design

85W
TDP
150W
250 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin
Power Connectors
1x 6-pin

Graphics Processor

Bonaire
GPU Name
Pitcairn
Bonaire XT (215-0839039)
GPU Variant
Pitcairn PRO (215-0828062)
GCN 2.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.08 billion
Transistors
2.8 billion
160 mm²
Die Size
212 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
-
-
-
6.3
Shader Model
5.1

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