Report an Error

ATI Radeon HD 3850 X2

Graphics Processor
RV670 x2
Cores
320 x2
TMUs
16 x2
ROPs
16 x2
Memory Size
512 MB x2
Memory Type
GDDR3
Bus Width
256 bit x2
The Radeon HD 3850 X2 was a performance graphics card by ATI, launched in April 2008. Built on the 55 nm process, and based on the RV670 graphics processor, in its RV670 PRO variant, the card supports DirectX 10.1. The RV670 graphics processor is an average sized chip with a die area of 192 mm² and 666 million transistors. Radeon HD 3850 X2 combines two graphics processors to increase performance. It features 320 shading units, 16 texture mapping units and 16 ROPs per GPU. ATI has placed 1,024 MB GDDR3 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 512 MB). The GPU is operating at a frequency of 669 MHz, memory is running at 828 MHz.
Being a dual-slot card, its power draw is rated at 140 W maximum. Display outputs include: 2x DVI, 1x S-Video. Radeon HD 3850 X2 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 349 US Dollars.

Graphics Processor

GPU Name
RV670
GPU Variant
RV670 PRO
(215-0708003)
Architecture
TeraScale
Foundry
TSMC
Process Size
55 nm
Transistors
666 million
Die Size
192 mm²

Graphics Card

Release Date
Apr 4th, 2008
Generation
Radeon R600
(HD 3800)
Production
End-of-life
Launch Price
349 USD
Bus Interface
PCIe 2.0 x16
Reviews
1 in our database

Relative Performance

30%
GeForce 210
39%
GeForce 9400 GT
48%
Radeon HD 4550
61%
Radeon HD 5450
72%
Radeon HD 6450
76%
GeForce GT 520
93%
GeForce GT 220
100%
Radeon HD 3850 X2
122%
GeForce GT 430
124%
Radeon HD 5570
134%
Radeon HD 4670
142%
GeForce GT 440
145%
GeForce GT 240
166%
GeForce 9600 GT
176%
Radeon HD 5670
189%
GeForce GT 640
196%
GeForce 9800 GT
204%
Radeon HD 6670
210%
Radeon HD 4830
224%
Radeon HD 4770
236%
Radeon HD 4850
242%
GeForce GTS 250
249%
GeForce GTS 450
258%
Radeon HD 5750
294%
Radeon HD 7750
296%
Radeon HD 5770
302%
GeForce GTX 260
305%
Radeon HD 4870
306%
Radeon Vega 8
309%
GeForce GTX 550 Ti
312%
GeForce GTX 650
330%
Radeon HD 5830
347%
Radeon HD 6790
353%
Radeon HD 4890
366%
GeForce GTX 460
369%
Radeon RX Vega 11
372%
GeForce GT 1030
376%
GeForce GTX 275
377%
Radeon HD 7770 GHz Edition
378%
GeForce GTX 280
385%
GeForce GTX 465
404%
Radeon HD 6850
411%
GeForce GTX 285
441%
Radeon HD 5850
449%
GeForce GTX 650 Ti
449%
Radeon HD 7790
468%
Radeon RX 550
470%
GeForce GTX 470
487%
Radeon HD 6870
519%
Radeon HD 5870
535%
GeForce GTX 560 Ti
538%
Radeon HD 4870 X2
548%
GeForce GTX 750 Ti
551%
Radeon HD 6950
570%
GeForce GTX 295
577%
GeForce GTX 650 Ti Boost
581%
Radeon HD 7850
591%
GeForce GTX 480
619%
Radeon HD 6970
631%
Radeon R7 265
641%
Radeon RX 460
641%
Radeon R7 370
643%
GeForce GTX 660
645%
GeForce GTX 570
656%
Radeon RX 560
696%
GeForce GTX 950
703%
Radeon HD 7870 GHz Edition
720%
Radeon R9 270X
728%
GeForce GTX 660 Ti
732%
GeForce GTX 580
738%
GeForce GTX 1050
739%
Radeon HD 7950
754%
Radeon HD 5970
775%
GeForce GTX 760
834%
GeForce GTX 670
856%
GeForce GTX 960
878%
Radeon R9 380
883%
Radeon R9 285
892%
Radeon HD 7970
901%
GeForce GTX 680
922%
GeForce GTX 1050 Ti
946%
GeForce GTX 770
968%
Radeon HD 6990
991%
Radeon R9 280X
1005%
GeForce GTX 590
1006%
Radeon HD 7970 GHz Edition
1114%
GeForce GTX 780
1154%
GeForce GTX 1650
1226%
Radeon RX 470
1243%
Radeon R9 290
1310%
Radeon RX 570
1326%
Radeon R9 390
1333%
Radeon R9 290X
1351%
GeForce GTX 970
1369%
GeForce GTX TITAN
1387%
GeForce GTX 780 Ti
1407%
Radeon R9 390X
1413%
Radeon HD 7990
1420%
Radeon RX 480
1432%
GeForce GTX 690
1509%
Radeon RX 580
1540%
GeForce GTX 980
1560%
Radeon R9 FURY
1560%
GeForce GTX 1060 6 GB
1630%
Radeon RX 590
1716%
Radeon R9 295X2
1726%
GeForce GTX 1660
1746%
Radeon R9 FURY X
1775%
GeForce GTX 980 Ti
1822%
GeForce GTX TITAN X
1981%
GeForce GTX 1660 Ti
1981%
GeForce GTX 1070
2109%
Radeon RX Vega 56
2237%
GeForce GTX 1070 Ti
2301%
Radeon RX Vega 64
2333%
GeForce GTX 1080
2333%
GeForce RTX 2060
2429%
Radeon RX 5700
2621%
GeForce RTX 2060 SUPER
2716%
GeForce RTX 2070
2780%
Radeon RX 5700 XT
2812%
Radeon VII
2885%
TITAN X Pascal
2972%
GeForce GTX 1080 Ti
3004%
GeForce RTX 2070 SUPER
3196%
GeForce RTX 2080
3388%
GeForce RTX 2080 SUPER
3739%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
669 MHz
Memory Clock
828 MHz
1656 MHz effective

Memory

Memory Size
512 MB
Memory Type
GDDR3
Memory Bus
256 bit
Bandwidth
52.99 GB/s

Render Config

Shading Units
320
TMUs
16
ROPs
16
Compute Units
4
L2 Cache
256 KB

Theoretical Performance

Pixel Rate
10.70 GPixel/s
Texture Rate
10.70 GTexel/s
FP32 (float) performance
428.2 GFLOPS
FP64 (double) performance
85.63 GFLOPS (1:5)

Board Design

Slot Width
Dual-slot
Length
10.5 inches
267 mm
TDP
140 W
Suggested PSU
350 W
Outputs
2x DVI
1x S-Video

Graphics Features

DirectX
10.1 (10_1)
OpenGL
3.3
OpenCL
N/A
Vulkan
N/A
Shader Model
4.1

RV670 GPU Notes

Codename: Boom
Graphics/Compute: GFX3
Display Core Engine: 2.0
Unified Video Decoder: 1.0

RV670 Chip Numbers:
RV670 XT (215-0708017)
RV670 XTX ES (215-0708001)

Retail boards based on this design (1)

Name GPU Clock Memory Clock Other Changes
ASUS ROG HD 3850 X2 669 MHz 828 MHz