News on Haswell based mobile Precision M6800 ?

What's the voltage on those. Also, I wouldn't even dare use that with a Precision, the 240W adapter on the M6700 is there for a reason (the laptop can draw a lot of power). If you have one of the less powerful configs, I think you could get away with 180 W, but forget 90 W.

 

A 90W will work but you will get (severely?) reduced performance.

See Bokeh's M6600 review for information on how the laptop behaves with various power adapters. (Ctrl+F for "How big is this power adapter?" to find the appropriate section.)

The 240W adapter is rather large. I personally just bought a few extra 240W adapters so that I can leave one at the office and a couple at home, so as not to have to lug the thing around.

 

I will have to check the 90W performance on the M6800. You might be able to get most of the CPU performance with a smaller adapter and a fully charged battery, but once anything else like the GPU is using power, you will not have enough supply. Battery charging with the system off should be the same, with the system running it will be much slower to charge.

The 90W is the smallest adapter that will charge the battery on the M6700, not sure about the M6800.

 

Probably need to use thorttlestop so the cpu will work at full speed (at least for sandy and ivy), else everything throttle when it detect a lower watt adapter.

 

I use a 90w adapter without problems (except battery is almost not loading when the laptop runs), but I get a Dell message box that I should at least use a 130w adapter, so that sounds like a supported option from Dell.

 

I always thought that if a workstation can run in battery mode for a couple of hours or more on a 95Wh battery, a 90W power supply should be able to sustain the same mode of operation indefinitely, or alternatively recharge the battery when such laptop is in standby or turned off. I understand that the machine in battery mode is throttled down, but it is better than nothing when your power option are limited (such as in a plane where getting power for a 90W power supply is already borderline).

 

I'm getting emails suggesting a problem with my 2ND ORDER...
Dell must not want to sell these things :/

 

Bad luck, my second order flew through. Went from order received to shipped in 4 days, and that was over the weekend... not going to celebrate yet though, you never know.

 

What model & configuration did you order? Was it a pre-configured system?

 

(mine)

1

210-AAYI

Dell Precision M6800 CTO Base
1

370-AAUU

16GB (2x8GB) 1600MHz DDR3L
1

580-AAFH

Internal English Backlit Dual Pointing Keyboard
1

490-BBKV

NVIDIA Quadro K4100M w/4GB GDDR5
1

555-BBLC

Dell Wireless 1601 Driver
1

400-AAYI

750GB 2.5inch SATA (7,200 Rpm) Hard Drive
1

421-8979

Windows 8 Pro, 64-bit, Latitude, OptiPlex, Precison, English
1

570-AADK

No Mouse
1

429-AAHU

8X DVD+/-RW Drive Slot Load
1

555-BBJV

Dell Wireless 1601 2x2 802.11n+BT+60GHz (WiGig)
1

330-1838

6-Foot, 3-Pin Power Cord,Mobile Precision, US
1

340-AAMJ

English Shipping Docs
1

319-BBBK

No Camera Software
1

937-1175

Dell Limited Hardware Warranty Plus Service Initial Year
1

937-1177

Dell Limited Hardware Warranty Plus Service Extended Year(s)
1

937-1565

Basic Hardware Service: Next Business Day Limited Onsite Service After Remote Diagnosis Initial Year
1

937-1577

Basic Hardware Service: Next Business Day Limited Onsite Service After Remote Diagnosis 2 Year Extended
1

983-8362

Accidental Damage Service, 3 Year
1

988-7689

Accidental Damage Service
1

631-AADX

No Out-of-Band Systems Management
1

430-XYGW

Dell Precision M6800 Resource DVD
1

401-AADF

No Additional Hard Drive
1

346-BBER

SWIPE Fingerprint Reader and Smart Card Reader (Contact and Contactless) Palmrest
1

340-AASE

No Quick-Reference Guideline
1

346-BBHS

No RFID Label
1

332-1286

Non-Canada Orders only
1

451-BBDJ

9-cell (97Wh) Lithium Ion battery with ExpressCharge
1

451-BBFM

No additional battery
1

556-BBDZ

No Mobile Broadband
1

329-BBOY

Smartcard Reader Base for Covet
1

387-BBDP

Dell Energy Star 5.2
1

338-BCPR

Intel Core i7-4900MQ Processor (Quad Core, 8M Cache, 2.8 GHz, w/HD Graphics 4600)
1

954-3465

No DDPE Encryption Software
1

452-BBDE

E-PRT Plus,APR,USB3.0
1

401-AADF

No Additional Hard Drive
1

320-BBFK

No Back Cover
1

319-BBCM

Integrated Camera,Microphone bezel,Covet
1

461-AABV

No Accessories
1

817-BBBC

Not Selected in this Configuration
1

401-AADF

No Additional Hard Drive
1

389-BCVS

Dell Precision M6800 Regulatory label for Touch Screen
1

338-BCMH

Intel Core i7 Processor Label
1

391-BBIO

44cm(17.3") UltraSharp FHD(1920x1080) LED-backlit Multi-Touch with Premium Panel Guarantee for Covet
1

630-AABP

Microsoft Office Trial, MUI, OptiPlex, Precision, Latitude
1

340-ADFZ

Dell Power Manager
1

421-9982

Thank you for buying Dell
1

422-0007

Dell Data Protection System Tools Digital Delivery/NB
1

640-BBHQ

Not Selected in this Configuration
1

640-BBHR

Visit Dell Data Protection solutions | Dell
1

640-BBJE

Client System Update,Dell Precision M6800
1

658-BBLB

Dell Applications for Windows
1

658-BBRB

Waves Maxx Audio
1

780-BBFE

No RAID
1

650-AAHI

No Security Software
1

450-AATG

240W AC Adapter
1

340-ADSN

Dell Precision Ship Material
1

340-ADSS

Shipping Material,DAO,Dell Precision M6800
1

340-ADTF

Shipping Material,STBX,Dell Precision M6800
1

340-AFCG

Shipping Material,RBIT,D-SRS
1

340-AFCW

Shipping Material,BWN,Dell Precision M6800
1

620-AACT

Windows 8 Home/PRO (64Bit) DVD
1

637-AAAC

Dell Backup and Recovery Professional
1

800-BBGH

Standard Shipment (EL)