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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
GPU Chip
GPU
I/O
I/O
The Radeon HD 3850 X2 was a performance-segment graphics card by ATI, launched on April 4th, 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. Since Radeon HD 3850 X2 does not support DirectX 11 or DirectX 12, it might not be able to run all the latest games. 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 paired 1,024 MB GDDR3 memory with the Radeon HD 3850 X2, 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
Density
3.5M / mm²
Die Size
192 mm²
Chip Package
FCBGA-1281

Graphics Card

Release Date
Apr 4th, 2008
Generation
Radeon R600
(HD 3800)
Predecessor
Radeon R500 PCIe
Successor
Radeon R700
Production
End-of-life
Launch Price
349 USD
Bus Interface
PCIe 2.0 x16
Reviews
1 in our database

Relative Performance

GeForce 210
30%
GeForce 9400 GT
39%
Radeon HD 4550
48%
Radeon HD 5450
61%
Radeon HD 6450
72%
GeForce GT 520
76%
GeForce GT 220
93%
Radeon HD 3850 X2
100%
GeForce GT 430
122%
Radeon HD 5570
124%
Radeon HD 4670
134%
GeForce GT 440
142%
GeForce GT 240
145%
GeForce 9600 GT
166%
Radeon HD 5670
177%
GeForce GT 640
189%
GeForce 9800 GT
196%
Radeon HD 6670
204%
Radeon HD 4830
210%
Radeon HD 4770
224%
Radeon HD 4850
236%
GeForce GTS 250
242%
GeForce GTS 450
249%
Radeon HD 5750
258%
Radeon HD 7750
294%
Radeon HD 5770
296%
GeForce GTX 260
302%
Radeon HD 4870
305%
Radeon Vega 8
306%
GeForce GTX 550 Ti
309%
GeForce GTX 650
312%
Radeon HD 5830
330%
Radeon HD 6790
347%
Radeon HD 4890
353%
GeForce GTX 460
366%
Radeon RX Vega 11
369%
GeForce GT 1030
372%
GeForce GTX 275
376%
Radeon HD 7770 GHz Edition
377%
GeForce GTX 280
378%
GeForce GTX 465
385%
Radeon HD 6850
404%
GeForce GTX 285
411%
Radeon HD 5850
441%
GeForce GTX 650 Ti
449%
Radeon HD 7790
449%
Radeon RX 550
468%
GeForce GTX 470
469%
Radeon HD 6870
487%
Radeon HD 5870
519%
GeForce GTX 560 Ti
535%
Radeon HD 4870 X2
538%
GeForce GTX 750 Ti
548%
Radeon HD 6950
551%
GeForce GTX 295
570%
GeForce GTX 650 Ti Boost
577%
Radeon HD 7850
581%
GeForce GTX 480
591%
Radeon HD 6970
619%
Radeon R7 265
631%
Radeon RX 460
641%
Radeon R7 370
641%
GeForce GTX 660
643%
GeForce GTX 570
645%
Radeon RX 560
656%
GeForce GTX 950
696%
Radeon HD 7870 GHz Edition
702%
Radeon R9 270X
719%
GeForce GTX 660 Ti
728%
GeForce GTX 580
732%
GeForce GTX 1050
737%
Radeon HD 7950
739%
GeForce GTX 1630
753%
Radeon HD 5970
754%
GeForce GTX 760
775%
GeForce GTX 670
834%
GeForce GTX 960
856%
Radeon R9 380
877%
Radeon R9 285
883%
Radeon HD 7970
892%
GeForce GTX 680
901%
GeForce GTX 1050 Ti
922%
GeForce GTX 770
946%
Radeon HD 6990
968%
Radeon R9 280X
991%
GeForce GTX 590
1005%
Radeon HD 7970 GHz Edition
1006%
GeForce GTX 780
1114%
Arc A380
1116%
Radeon RX 6400
1131%
GeForce GTX 1650
1154%
Radeon RX 470
1226%
Radeon R9 290
1243%
Radeon RX 570
1310%
Radeon R9 390
1326%
Radeon R9 290X
1333%
GeForce GTX 970
1351%
GeForce GTX TITAN
1369%
GeForce GTX 780 Ti
1387%
Radeon R9 390X
1407%
Radeon HD 7990
1413%
Radeon RX 480
1420%
GeForce GTX 690
1432%
GeForce GTX 1060 6 GB
1471%
Radeon RX 5500 OEM
1491%
Radeon RX 580
1509%
Radeon RX 5500 XT
1521%
Radeon RX 6500 XT
1534%
GeForce GTX 980
1540%
GeForce GTX 1650 SUPER
1554%
Radeon R9 FURY
1560%
Radeon RX 590
1630%
Radeon R9 295X2
1716%
GeForce GTX 1660
1725%
Radeon R9 FURY X
1746%
GeForce GTX 980 Ti
1775%
GeForce GTX TITAN X
1821%
GeForce GTX 1660 SUPER
1876%
GeForce GTX 1070
1981%
GeForce GTX 1660 Ti
1981%
GeForce RTX 3050 8 GB
2013%
Radeon RX Vega 56
2109%
GeForce GTX 1070 Ti
2237%
Radeon RX 5600 XT
2270%
Radeon RX Vega 64
2300%
GeForce GTX 1080
2332%
GeForce RTX 2060
2332%
Radeon RX 5700
2428%
Arc A580
2433%
Radeon RX 6600
2535%
GeForce RTX 2060 SUPER
2620%
GeForce RTX 2070
2654%
Radeon RX 5700 XT
2656%
GeForce RTX 3060 12 GB
2708%
Arc A750
2797%
Radeon VII
2812%
TITAN X Pascal
2884%
Radeon RX 6600 XT
2914%
GeForce GTX 1080 Ti
2971%
Arc A770
3001%
GeForce RTX 2070 SUPER
3003%
Radeon RX 6650 XT
3159%
Radeon RX 7600
3194%
GeForce RTX 4060
3209%
GeForce RTX 2080
3230%
Radeon RX 7600 XT
3296%
GeForce RTX 2080 SUPER
3387%
GeForce RTX 3060 Ti
3470%
Radeon RX 6700 XT
3592%
Radeon RX 6750 XT
3812%
GeForce RTX 4060 Ti 8 GB
3854%
GeForce RTX 2080 Ti
3883%
GeForce RTX 3070
4063%
GeForce RTX 3070 Ti
4348%
Radeon RX 7700 XT
4393%
Radeon RX 6800
4479%
GeForce RTX 4070
4963%
Radeon RX 6800 XT
5087%
GeForce RTX 3080
5281%
Radeon RX 7800 XT
5333%
Radeon RX 6900 XT
5481%
GeForce RTX 4070 SUPER
5757%
Radeon RX 7900 GRE
5867%
GeForce RTX 3080 Ti
5915%
Radeon RX 6950 XT
5923%
GeForce RTX 3090
6027%
GeForce RTX 4070 Ti
6178%
GeForce RTX 4070 Ti SUPER
6750%
Radeon RX 7900 XT
6932%
GeForce RTX 3090 Ti
6991%
GeForce RTX 4080
7848%
GeForce RTX 4080 SUPER
7966%
Radeon RX 7900 XTX
8042%
GeForce RTX 4090
9860%
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for 2080 Ti and faster.
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
669 MHz
Memory Clock
828 MHz
1656 Mbps 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)
428.2 GFLOPS
FP64 (double)
85.63 GFLOPS (1:5)

Board Design

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

Graphics Features

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

RV670 GPU Notes

Mobile Variant: M88
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)

Latest Drivers:
Windows XP / 8:
Catalyst Software Suite 13.1 / 13.4 Beta

Windows Vista / 7:
Catalyst Software Suite 13.9

Retail boards based on this design (1)

Name GPU Clock Memory Clock Other Changes
669 MHz 828 MHz
Nov 28th, 2024 14:03 EST change timezone

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