A good R0 and D0 chip can easily keep up with the speed-binned E8x00 E0. I've worked with E5300 and E7400 capable of breaking 4.2GHz with less than 1.36V in BIOS.
CPU: E7400 D0 stepping
Batch unknown: lapped heat spreader
S-Spec: SLB9Y
Pack date: 5/09
Purchase: Fry's BM
Motherboard: Abit IP35-E
CPU volt: {1.23 VID} 4.20GHz/1.35 BIOS/1.31 CPUz (also stable @ 4.30GHz/1.39 BIOS/1.35 CPUz)
FSB x Multiplier: 400 x 10.5 for 4.20GHz
VTT: 1.20V
NB: 1.25V
SB: 1.50V
Memory: Crucial Ballistix DDR2 1066 2.0V version
Speed: 500MHz
Volt: 1.85V
Timing: 5-5-4-10-32-2T
HSF: Big Typhoon
Lapped: YES. Orthos small & large/Prime95 small & large/OCCT 3.1 small & large 52C max with 76F ambient. OCCT 3.1 Linpack 63C with 74F ambient.
Thermal Compound: AS5
The R0 E5300 is 40MHz slower at the same core voltage. On the plus side, peak temp is 2-3C lower than E7400.
CPU: E7400 D0 stepping
Batch unknown: lapped heat spreader
S-Spec: SLB9Y
Pack date: 5/09
Purchase: Fry's BM
Motherboard: Abit IP35-E
CPU volt: {1.23 VID} 4.20GHz/1.35 BIOS/1.31 CPUz (also stable @ 4.30GHz/1.39 BIOS/1.35 CPUz)
FSB x Multiplier: 400 x 10.5 for 4.20GHz
VTT: 1.20V
NB: 1.25V
SB: 1.50V
Memory: Crucial Ballistix DDR2 1066 2.0V version
Speed: 500MHz
Volt: 1.85V
Timing: 5-5-4-10-32-2T
HSF: Big Typhoon
Lapped: YES. Orthos small & large/Prime95 small & large/OCCT 3.1 small & large 52C max with 76F ambient. OCCT 3.1 Linpack 63C with 74F ambient.
Thermal Compound: AS5
The R0 E5300 is 40MHz slower at the same core voltage. On the plus side, peak temp is 2-3C lower than E7400.