^For the 10th time, an after-market R9 270 does not use 150-151W of power. Your entire claim rests on some dubious/erroneous information from Tom's when dozens of far more reputable sites disprove the data. You realize that an i7 3770K system with an after-market 270 uses LESS than 200W of power? Even R9 270X/7870 and an i7 3770/4770K combo uses barely more than 210W:
http://techreport.com/review/25642/amd-radeon-r9-270-graphics-card-reviewed/8
But I guess we should ignore real world data and believe claims that a system with an R9 270
needs a 450-500W PSU despite users running an overclocked i7 920/860 with R9 290/7970Ghz max overclocked on a 500-550W units for years. I personally ran my i7 860 @ 3.9Ghz with Fermi 470 @ 750Mhz both maxed out for at least 1 year doing distributed computing projects that loaded the CPU and GPU to 99% on a Corsair 520W.
Let me guess your recommendation for a system with a single 290/7970Ghz is a 750W PSU and for 290X CF is a 1200W PSU?
I don't know since when it became gospel that AIB's conservative guidance for PSU recommendations is suddenly some hard written rule?
I mean do you even bother reading professional reviews of how much a modern i7 with a high-end card actually uses? You really should start before polluting our forum with uninformed data that misleads potential system builders. I may sound harsh but it has to be said to provide facts.
I'll even get you started to understand just how wrong your claims of needing a 450-500W PSU for an R9 270 style card are:
http://www.techspot.com/article/928-five-generations-nvidia-geforce-graphics-compared/page8.html
For crying out loud even the crazy inefficient reference R9 290/290X system just cracks 400W at max load:
http://techreport.com/review/27067/nvidia-geforce-gtx-980-and-970-graphics-cards-reviewed/12
While mid-range cards like 770 and 280X paired with a modern i5/7 coming in well below 325W:
http://techreport.com/review/25466/amd-radeon-r9-280x-and-270x-graphics-cards/10
You also need to understand that power usage at the wall is not the load the PSU actually experiences. If the total system uses 350W at the wall and the PSU is 88% efficient, your load at the PSU level is actually 308W.
No, my replies in this thread aren't about 750Ti vs. 270/270X. It's about getting people informed about PSU ratings, overall system power usage under gaming and about true ratings of quality PSUs. Unfortunately the FUD keeps getting spread on forums like ours and poor new system builders keep buying low end power cards because they are mislead that their 350-400W Corsair, Antec, Sparkle, XFX PSU isn't sufficient.
Exactly.
Obviously the better solution is to throw that XPS in the trash and build a new CPU with a R9 270 (according to this thread) but hey!....
So what you are saying it's not possible at all to upgrade OEM systems' power supplies, ever? I don't know if you guys are trolling or what.
The XPS 8700 easily runs an i7 4770 with a GTX 660:
http://www.pcmag.com/article2/0,2817,2424864,00.asp?fullsite=true
The difference in peak load between a 660 and 270
X is
3W:
http://www.techpowerup.com/mobile/reviews/MSI/GTX_970_Gaming/25.html
I guess by end of 2014, facts start getting in the way of perf/watt and TDP marketing being used to gauge power usage, like the
absolutely worthless TDP claims of a 970 card depicted to represent its actual real world power usage.
http://www.techpowerup.com/mobile/reviews/MSI/GTX_970_Gaming/25.html