Lynnfield P55 - B2B Performance

[Charles Wirth]

A brief explanation into Back to Back Cas Delay settings and gaining more performance or showing of high memory speeds without bandwidth.

Intel i7 870 @ 4Ghz 30c
200x20 @ 1.3v
QPI/Vtt 1.1v
HT ON
EIST OFF
C1E OFF
TURBO OFF

Kingston 1600C9 @ 2000C9
Elpida 1.74v

Gigabyte p55 UD6
F4E bios

B2B setting of 1, set in bios, shows as #disabled in CPU-Tweaker

B2B setting of 6, set in CPU-Tweaker

B2B setting of 12, set in CPU-Tweaker

B2B setting of 32, set in CPU-Tweaker

The major problem is when you use the upper memory rations the B2B setting will be dropped back to 12 in most cases if left on auto.

The Intel p55 board does now allow manual setting of the B2B in advanced memory timing.

Elipda, Samsung, and Micron all could function at speed with B2B bios setting of 1 or 4 in CPU-Tweaker

Tightened 32M