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DFI LP NF4 UT SLI-DR: Overclocking Test

Overclocking/Overclocking Tests by windwithme @ 2005-03-20

I received the SLI board in January when it first hit the market only to finish this article in March. This article focuses on how much we could push the board in terms of overclocking rather than its SLI feature and graphic performance.

The tweaking

The tweaking:

Before we proceed, here is the something you should read carefully before hand.

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While the default Vdimm is 2.85, the jumper arrangement allows 3.2 to 4 volt adjustments from BIOS.

There has been a couple of BIOS upgrades since January; here is a run down of what I did before the latest BIOS was released during Jan and Feb using MEMTEST.

Test setup:

3000+ OC 300X8=2.4G

G.SKILL TCCD 512MBX2

DDR600 1T CL2.5 4-4-8

Original (shipped) BIOS 01/19

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The frequency bandwidth is limited to 2T setting.

Official BIOS 01/25 - corrected and improved, 1T is possible matching other high-end NF4 boards. Lower latency settings became possible.

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Unofficial BIOS 02/01 - In BIOS DRAM option is further optimized when tighter timing is possible.

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Latest BIOS 02/18 finalized the timing issues.

Test with MEMFEST 1.51

300X9 =2.7G

DDR600 CL2.5 4-3-5 1T

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Test Setup: using the latest BIOS

AMD K8 939 3000+ (0.09) 0441SPMW&0448SPAW

DFI LP UT NF4 Ultra-D (02,/01 BIOS)

G.SKILL TCCD LA 256MBX2 LA&TCCD 512MBX2

Ultra high-level S3 PCI indicator 2MB

Maxtor 30GB 5,400 RPM

TEAC 512EB

DELTA 300W

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BIOS screen shots:

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The "normal" Vcore setting is limited to 1.55 Volt

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Going to CPU VID Special Control, the voltage could go upto 2.108 Volt (1.55 x 1.36) a dangerous level that could damage your CPU in no time. While the NF4 chipset voltage increase does not have much effect base on the time I toyed around with it.

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There are tons of parameters for you to tweak. My 3000+ finds the most comfortable settings here.

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Users may fine tune CPU/Chipset temperatures relative to fan speeds, a nice and extra-ordinary feature indeed.

Final timing tweaks using MEMTEST before we head for Prime95 stability test -

MEMTEST 1.50 edition cannot detect when NF4 latency settings.
Setting - 256MBX2 DDR650 1T CL2.5 4-3-5

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Settings - 512MBX2 DDR600 1T CL2.5 4-3-5
Finally, the first time sing K8 is running 3200MB/S frequency width.

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Let's run some stability test ->

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