Pentium D will gain 95W TDP from September this year. Besides the lower TDP, some defects will be rectified. Intel Pentium D 960, 950, 945, 925 and 915 will be released in D0 Stepping. Pentium D 940, 930 and 920 are excluded from these improvements.

According to sources from Intel in HK, D0 Stepping will be introduced in Pentium D with 95W TDP on September. Besides the lower TDP, some defects will be rectified. As we know, only some of the C0 stepping Pentium D (FMA 05A) sports 95W TDP. 95W TDP is however definitely implemented in D0 Stepping. Pentium D 960, 950, 945, 925 and 915 will be released in D0 stepping. Pentium D 940, 930 and 920 are excluded from these improvements, and will not be released in D0 stepping.

The CPUID for the D0 Stepping will changed from F64 to F65. The package is slightly different too, marked 05A instead of FMB 05B. The problems of before D0 stepping are as follows:


VM Exit Due to a MOV from CR8 May Cause an Unexpected Memory Access



Power Down Requestes May not be Serviced if a Powe Down Transition is Interrupted by an In-Target Probe Event in the Presence of a Specific Type of VM Exit



VM Exit Due to TPR shadow Below Threshold May Impropenrly Set and Cause “Blocking by STI” actions



At a Bus Ration of 13:1, RCNT and address Parity May be Incorrect



The Execution of a VMPTRLD Instruction or VMREAD May Cause an Unexpected Memory Access



On a “Failed VM-entry” VM Exit, the VMCS Pointer may have incorrect Value

d0 stepping Intel To Reduce Pentium D TDP To 95W

Packaging differences.

d0 stepping 2 Intel To Reduce Pentium D TDP To 95W

Affected CPUs