Power consumption and efficiency
The X4 980's TDP rating of 125W puts in firmly in a higher weight class than its most direct price and performance competitors from Intel, all of which are 95W parts—despite the fact that only the Intel processors have a built-in GPU. Nevertheless, power ratings and true power consumption are tricky and can differ substantially in some cases. Here are our results for the X4 980 against, well, nearly everything.
Our X4 980-based test system draws roughly 20W more when idling and 60W more while rendering than a comparable Core i5-2400-based system. Power draw under load has risen only 7W versus the Phenom II X4 975, but AMD wasn't exactly winning this fight prior to the X4 980's arrival.
This puppy isn't going to win any power efficiency awards for this rendering workload, either. Even the old Core 2 Quad Q9400—which, after all, was fabbed on a fairly similar 45-nm process—is more efficient than the X4 980. Only AMD's hexa-core Phenom IIs can come close to Intel's best 45-nm chips, because those Phenoms don't have to live so far up the voltage/frequency curve.
And then there are Intel's 32-nm chips, which occupy the top six spots.
|Report: Intel Inside co-marketing program will get a budget cut||4|
|Gingerbread House Day Shortbread||12|
|iMac Pro details and release date come into focus||33|
|Radeon Software Adrenalin Edition: an overview||17|
|Tuesday deals: NVMe storage, a GeForce GTX 1080 Ti, and more||7|
|Intel 15.60 IGP drivers are sitting pretty for Okami HD||6|
|Synaptics Clear ID FS9500 fingerprint sensors slip under phone screens||20|
|TR's 2017 Christmas giveaway: goodies from MSI, Antec, and OCZ||30|
|VESA DisplayHDR attempts to demystify HDR-capable monitors||22|