Details of Haswell desktop CPU lineup
The next Intel microarchitecture, codenamed Haswell, is expected to launch in the second quarter 2013. There were multiple reports on the architecture features in the past months, but the exact lineup was not known up until this week. On Tuesday VR-Zone published specifications of desktop Haswell processors, that revealed Intel's plans to release 14 quad-core models, branded as Core i5-4xxx and i7-4xxx.
Common features of Core i7 Haswell CPUs include 4 cores with Hyper-Threading, 8 MB L3 cache, and HD 4600 graphics with 1.2 GHz maximum Turbo frequency (1.25 GHz on the i7-4770K). With the exception of the the unlocked 4770K, Core i7 CPUs will support Vpro technology, along with I/O Virtualization and Trusted Execution. Thermal Design Power on standard-power i7 parts was increased to 84 Watt, and stayed at 65W and 45W levels for "S" and "T" microprocessors. New in Core i7 family is a 35 Watt SKU, Core i7-4765T. This processor operates at 2 GHz, and up to 3 GHZ, and it seems like a perfect candidate for HPC systems and small home servers. More detailed list of Core i7 features, including clock rates, is provided further below. Those, who is familiar with existing Core i7 Ivy Bridge specifications, will immediately notice that all characteristics, with the exception of GPU and TDP for some SKUs, are identical between i7-3700 and i7-4700 series. As a result, the only performance improvements in initial Haswell lineup will be due to microarchitecture enhancements and better GPU:
Haswell Core i5 processors will also have 4 cores, but they will lack Hyper-Threading technology, and have the size of L3 cache reduced to 6 MB. The exception to this is Core i5-4570T, which will have 2 cores, Hyper-Threading and 4 MB of last level cache. All Haswell i5 CPUs will have HD 4600 (GT2) graphics, which is a significant upgrade from GT1 graphics on most Core i5 Ivy Bridge chips. The maximum dynamic frequency of the HD 4600 graphics is SKU dependent. The i5-4400 series has it set at 1.1 GHz. The maximum GPU frequency is bumped to 1.15 GHz for Core i5-4500, and up to 1.2 GHz for Core i5-4600 series. TDP of Core i5 CPUs is set at 84 Watt for standard-power chips, 65 Watt for "S", and 35 or 45 Watt for "T" chips. Like Core i7 Haswell parts, specifications of upcoming i5 processors match exactly the specs of Ivy Bridge CPUs. So once again, the Haswell processor are expected to perform better only due to more efficient CPU and upgraded GPU. Here is a summary of details of Core i5 Haswell microprocessors:
All Haswell CPUs will support DDR-1600 memory. The processors will utilize socket 1150, and will not be compatible with existing socket 1155 boards. The microprocessors are anticipated to arrive in April 2013. Dual-core Haswell SKUs should be available later in 2013.
Related News (newer articles):
Apr 23, 2013: Prices of Haswell desktop CPUs
Dec 29, 2012: Intel Haswell CPUs delayed until June 2013
Related News (older articles):
Aug 31, 2012: Basic features of Haswell Core, Pentium and Celeron CPUs
Aug 23, 2012: New video and graphics features of Haswell CPUs
Aug 21, 2012: Package options of desktop and mobile Haswell processors
Jul 10, 2012: Launch schedule of Intel Haswell processors