Only a few select Phenom Is were in the 140W range. And when they were put in low-end mobos, the mobos VRM failed in similar ways actually. If you want to know, most OEM manufacturers tend to limit the CPU to 95W TDP due to both heat and power consumption. In the majority of cases you won't see prebuilts with CPUs over 95W TDP. That's why Phenom x3s were more common than Phenom x4s in OEM builds at that time period.
A great alternative to the nForce boards are the 900 series chipset boards. The 900 series chipset is brand new and includes the AM3+ socket for future FX-Series processor support. They also NATIVELY support the running of SLI. The 800 series boards do not natively support SLI, but this can be done via an unofficial hack which is software-based (fairly safe) and works in the majority of cases.
- 990X chipset, 8x-8x SLI/CrossfireX, AM3+ socket, 8+2 VRM with heatsink, great features/price for tier - $150 + $8 shipping
ASRock 890GX Extreme4
- 890GX chipset, 8x-8x CrossfireX (SLI via hack), AM3 socket, 8+2 VRM with heatsink, one of the price/performance winners for such, but no AM3+ support - $127 + $7 shipping
ASRock 870 Extreme3
- 870 chipset, 8x-8x CrossfireX (SLI via hack), AM3+ socket (not pictured but that's what Newegg should hand over according to sources), 4+1 VRM with heatsink - $90 shipped (I can't be too sure on the 8x-8x CFX support; the hardware interconnect links are there, though AMD supposedly officially states that 870 chipset does not apparently support it)
If you plan on SLI-ing those 560s, then you definitely want to go with a motherboard supporting 8x-8x PCI-E; 8x PCI-e will not bottleneck anything. However, 4x PCI-E will bottleneck anything above a Radeon 5770. It should be noted that if you have no plans to SLI, then you should save your money!!! In which case I recommend:
ASUS M5A97 EVO
- 970 chipset, 16x-4x PCi-E, Am3+ socket, 6+2 VRM with heatsink - $118 shippedEdited by xd_1771 - 6/19/11 at 1:42am