I have to agree with Dencorso about this.
Haswell was never going to get XP support from Intel even though it came out in 2014. Had Microsoft expanded their support till 2015 or later then things might be different now.
When researching motherboards, the Sandy Bridge Z68 had Intel HD 1000 -> Intel HD 3000 IGPUs that started out with XP driver support if I recall correctly. I don't think it came at a later stage as a hindsight or backlash from user complaints.
This gave me hope to try out a Sandy Bridge with their first integrated GPU inside the CPU.
The original Z68 motherboard I wanted was discontinued so I tried a Z77 instead which is basically the same as a Z68 but improved and had PCIe 3.0 and USB 3.0 support for both Sandy Bridge and Ivy Bridge CPUs.
Also the Intel HD 4000 had XP driver support which made me more inclined to jump on board.
When I started to hear reports of Haswell's power efficiency I checked out the early Haswell Intel HD graphics driver for XP support and there was none.
And since Z77's were about to be discontinued I grabbed over a half dozen of these motherboards as backups for my legacy support.
I originally had high expectations for Haswell but why eliminate something as simple as an Intel HD graphics driver for XP? How much does it really cost to program such a driver even for basic desktop needs? Or why not disclose the source code so Haswell users could program it for themselves? Also at the time about 1/3 of all computers online were supposedly still running XP.
It didn't make sense why they chose to eliminate support in their 4th generation IGPUs except to force people to upgrade to Vista, 7, and 8.
Another early indication of this was the Intel HD driver did not include HDCP/COOP support which meant Blu-ray software players would not work with it.
Here is a link that proves there is no XP support for Intel HD 4th generation IGPUs and the last one being the 3rd generation Intel HD 4000.
However, aren't there some cheap Celeron 4th generation Haswell CPUs equipped with the very basic Intel HD 1000 IGPUs which is now called the Intel HD GT1 on Haswell?
Take for example the Intel® Celeron® Processor G1820 (2M Cache, 2.70 GHz).
The specifications label it simply as:
Processor Graphics ‡ Intel® HD Graphics
Currently around $50
Has anyone tried getting one of these to install under Windows XP rather than an Intel HD 4200 or higher IGPU model?
If that does work then that would be a loophole in getting Windows XP IGPU support on a Haswell. According to this link Intel HD GT1 is uses 10 execution units which is fairly similar to the performance of the Intel HD 3000 with 12 execution units but according to the GFLOPS the GT1 is superior but still inferior to the Intel HD 4000 GLOPS performance.
The other thing that upset me about Haswell was Intel also did not offer any SATA AHCI XP drivers so you couldn't natively install it unless you used IDE emulation mode which only some desktop BIOSes could do. I believe most laptop BIOSes don't even give you option for IDE emulation anymore.
Edited by 98SE, 22 July 2014 - 08:48 PM.