Detailed Intel Haswell specs revealed
Taking a closer look at the platforms, starting with the desktop we're looking at two or four cores, support for DDR3 and DDR3L (low power) memory at speeds of up to 1600MHz officially in a typical dual-channel configuration with a maximum of two DIMMs per channel. Oddly enough the TDP looks set to go back to 35, 45, 65 and 95W, the same as for Sandy Bridge and an increase from what we're expecting to see from Ivy Bridge. Again, as we reported a few days ago, Haswell will feature a fully integrated Voltage regulator, although unlike Sandy Bridge and Ivy Bridge, Haswell will feature improved overclocking, but we're not sure how far Intel will go here to bring back additional Bclk multipliers.
According to the slides we can expect at least three mobile SKUs, a "high-end" quad core platform in a BGA1364 package which comes with up to GT3 graphics, a standard dual or quad core platform for in a rPGA947 package with up to GT2 graphics and finally another BGA part which is likely to have its own custom page as this is the ULT multi-chip package that incorporates the chipset in the same package as the CPU cores and graphics and in this case we're looking at up to GT3 graphics. The ULT model also supports LP-DDR3 (1.2V) memory as well as DDR3L (1.35V) and this is also where Intel is putting extra focus on power saving with its improved system idle states. The packaging size for the single-chip model will measure 40x24x1.5mm (WxDxH) whereas the other mobile parts should measure 37.5x32mm (WxD) with no indication on thickness.
We already talked about the TDP for the desktop parts and this is where things get interesting with the mobile counterparts. Once more Intel is bringing up the max TDP to 37, 47 and 57W, which should be compared to 35, 45 and 55W for today's standard Voltage Sandy Bridge CPUs. This seems to be taking things in the wrong direction, although we have a feeling that it's the new graphics core that's causing the increase in TDP. With Ivy Bridge said to offer 60 percent faster graphics performance than Sandy Bridge, Intel is likely to try to boost the GPU performance at a similar level once again, although this is likely to be with the GT3 GPU core.
As for the ULT parts, well, the TDP is a mere 15W, but keep in mind that this is the minimum TDP in this case, as from Ivy Bridge, Intel will offer programmable TDP on some of its CPU SKUs. This allows the notebook makers to tailor the TDP to suit the cooling offered by the notebook in question. As such, some parts will have much higher TDP than 15W when running at full speed. We'll have to wait and see how this pans out, but it's worth keeping in mind that the CPU and GPU are sharing the same cooling solution, so there will be limits depending on what you're doing, as the GPU is going to be using its fair share of cooling capacity when in use.