AMD Radeon R7 265 vs ATI Radeon HD 4870 Mac Edition
We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 265 and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R7 265 's Advantages
Released 5 years and 1 months late
Boost Clock925MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (179.2GB/s vs 108.8GB/s)
224 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon R7 265
+57%
1.894 TFLOPS
Radeon HD 4870 Mac Edition
1.2 TFLOPS
Graphics Card
Feb 2014
Release Date
Jan 2009
Volcanic Islands
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
900 MHz
Base Clock
-
925 MHz
Boost Clock
-
1400 MHz
Memory Clock
850 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
179.2GB/s
Bandwidth
108.8GB/s
Render Config
16
Compute Units
10
-
-
-
1024
Shading Units
800
64
TMUs
40
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
29.60 GPixel/s
Pixel Rate
12.00 GPixel/s
59.20 GTexel/s
Texture Rate
30.00 GTexel/s
-
-
-
1.894 TFLOPS
FP32 (float)
1200 GFLOPS
118.4 GFLOPS
FP64 (double)
240.0 GFLOPS
Board Design
150W
TDP
150W
450 W
Suggested PSU
450 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
1x DVI
1x mini-DisplayPort 1.0
1x 6-pin
Power Connectors
2x 6-pin
Graphics Processor
Pitcairn
GPU Name
RV770
Pitcairn PRO
(215-0828062)
GPU Variant
RV770 XT Mac
(215-0669080)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
2.8 billion
Transistors
0.956 billion
212 mm²
Die Size
256 mm²
Graphics Features
12 (11_1)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
4.1
