EXTREME Overclocking  - ASUS M4A89GTD PRO/USB3 - 890GX/SB850 Chipset Review - Page: 5
Home | Reviews | EOC Forums | File Downloads | RealTime Pricing Engine | Free Magazines | Folding Stats Contact Us

ASUS M4A89GTD PRO/USB3 - 890GX/SB850 Motherboard

Date: March 2, 2010
Product: M4A89GTD PRO/USB3 - AMD Socket AM3
Company: ASUS
Author: Jason Rabel

Board Layout (cont):

In an age where usually all switches and jumpers have been transitioned to BIOS / software settings, ASUS has added a few nifty features to help people get started. First is a "MemOK" button, which will automatically test your memory with various settings to ensure stable performance. A switch labeled "Turbo_Key_II" which is basically an auto-overclocking feature. One can also manually overclock in the BIOS, and even via the Auto-tune software in Windows.

UPDATE: The "Mem OK" feature is actually a hardware based chip solution that ensures the best possibility of posting/booting the system in the event there are memory related issues. Mem OK will cycle through different stages adjusting timings, frequency, and even voltage, all in the attempt to have the system complete a POST. This feature can even be used when overclocking, if you hit a wall with your memory you can have Mem OK run its thing to hopefully get some stable settings at higher memory speeds.

Finally there is a switch for unlocking CPU cores, "Core Unlocker". We noticed there are no ACC settings in the BIOS, I'm not really sure if ASUS decided to hide this or it was removed from the 8xx Series chipset. Regardless there is still the ability to unlock extra cores, and ASUS offers three ways to do it.

  1. Core Unlocker switch
  2. Press "4" during POST
  3. Enable in the BIOS

UPDATE: I talked to ASUS and they confirmed that the 890GX no longer offers ACC. To overcome that obstacle and offer their "Core Unlocker" feature, they utilize a hardware based Turbo V EVO chip (a similar chip was first introduced on ASUS' X58 platform).


Let's talk a little about the extra chips on the board. ASUS chose to use the Realtek ALC892 HD Audio Codec, as well as a Realtek 8111E Gigabit LAN controller. The gigabit controller is a discrete PCIe chip, which seems a little odd since AMD is now offering a Gigabit MAC in the southbridge. I can only assume it boils down to availability, cost, and features for how things get implemented. Firewire support is provided from a VIA VT6308P chip, and the pair of USB 3.0 ports is powered by a NEC D720200F1 chip.


While it's rare these days to fine a PCIe video card with additional cooling on the back side, there are a few that still lurk around (especially passive cooling models). If you end up running dual video cards and happen to have one of those styles with a bunch of cooling on the back side, there *could* be a potential clearance issue with the northbridge heatsink. I honestly don't think this is going to be an issue for anyone, but I figured I would at least throw it out there.


Latest Reviews
Most Downloaded Files
Recently Added Files
CPU-Z 1.4912/12/08
Compare Prices On Top Brands!

Intel Processors
Core i7/i5 - Nehalem
975 Extreme  960  950  920
870  860  750  670  661  660

Core 2 Quad - Yorkfield
Q9650  Q9550  Q9400  Q9300  Q8300  Q8200

Core 2 Duo - Wolfdale
E8600  E8500  E8400  E8200  E7300  E7200

AMD Processors
Phenom II X4
965 Black  955 Black  945  925

Phenom II X2
555  550

Athlon II X4
630  620

Athlon II X3
435  425

Athlon II X2
250  245

Video Cards
nVidia GeForce GTX 200 Series
GTX 295  GTX 285  GTX 280  GTX 260

nVidia GeForce 9 Series
9800 GX2  9800 GTX+  9800 GTX  9800 GT  9600 GT  9600 GSO

ATI Radeon HD 4000 Series
4870 X2  4870  4850  4830  4670  4650

Search By Brand
ASUS  BFG  Diamond  eVGA  Gigabyte  HIS  MSI  Palit  PowerColor  PNY  Sapphire  Visiontek  XFX

PC Memory

ASUS  Biostar  DFI  ECS  eVGA  Foxconn  Gigabyte  Intel  MSI  Shuttle  Supermicro  Tyan  XFX

Hard Drives
Seagate  Maxtor  Samsung  Fujitsu  Western Digital

  Technology Magazines FREE to Qualified Professionals.
eWeek MagazineeWeek is the essential technology information source for builders of e-business. Focuses on e-commerce, communications and Internet-based architecture. Oracle MagazineOracle Magazine contains technology-strategy articles, sample code, tips, Oracle and partner news, how-to articles for developers and DBAs, and more. Dr. Dobb's JournalDr. Dobb's Journal enables programmers to write the most efficient and sophisticated programs and help in daily programming quandaries. InformationWeekInformationWeek is the only newsweekly you'll need to stay on top of the latest developments in information technology.
  Other Popular Titles: PC Magazine, BusinessWeek, Baseline, Business Solutions, Software Magazine, InfoStor, Security Source , TelevisionWeek, more...
Copyright 2000-2014 EXTREME Overclocking. All rights reserved.
Disclaimer of Liability - Privacy Policy