Radeon HD 3850 and Radeon R7 (Kaveri) - video card comparison
Radeon HD 3850
Radeon R7 (Kaveri)
Architecture
TeraScale (2005−2013)
GCN 1.1 (2014)
GPU code name
RV670
Kaveri
Market segment
Desktop
Laptop
Release date
November 2007
June 2014
Interface
PCIe 2.0 x16
-
Supplementary power connectors
1x 6-pin
-
Boost clock speed
-
686 MHz
Core clock speed
668 MHz
553 MHz
Floating-point performance
427.5 gflops
-
Manufacturing process technology
55 nm
28 nm
Number of transistors
666 million
2410 Million
Pipelines / CUDA cores
320
512
Power consumption (TDP)
75 Watt
-
Texture fill rate
10.69
-
Memory type
GDDR3
-
Maximum RAM amount
1 GB
-
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
1660 MHz
-
Memory bandwidth
53.12 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x S-Video
-
DirectX
10.1 (10_1)
12 (FL 12_0)
OpenCL
N/A
-
OpenGL
3.3
-
Shader Model
4.1
-
Vulkan
N/A
-