AMD Carrizo Part 2: A Generational Deep Dive into the Athlon X4 845 at $70
by Ian Cutress on July 14, 2016 9:00 AM ESTOffice Performance at 3 GHz
All of our benchmark results can also be found in our benchmark engine, Bench.
Agisoft Photoscan – 2D to 3D Image Manipulation: link
Agisoft Photoscan creates 3D models from 2D images, a process which is very computationally expensive. The algorithm is split into four distinct phases, and different phases of the model reconstruction require either fast memory, fast IPC, more cores, or even OpenCL compute devices to hand. Agisoft supplied us with a special version of the software to script the process, where we take 50 images of a stately home and convert it into a medium quality model. This benchmark typically takes around 15-20 minutes on a high end PC on the CPU alone, with GPUs reducing the time.
Looking at the subtests for Photoscan, Carrizo's biggest hiccup was in the first stage which loads images into memory and attempts to identify and compare similar points in the photograph and its location relative to the object. This requires a significant amount of memory management, and Carrizo loses 17% in the first stage to Kaveri. Stage 4 gets a bump with Carrizo over Kaveri, enough to bring it back over Trinity and Richland, but overall the Carrizo part is still 6% down.
Cinebench R15
Cinebench is a benchmark based around Cinema 4D, and is fairly well known among enthusiasts for stressing the CPU for a provided workload. Results are given as a score, where higher is better.
Similar to Dolphin and 3DPMv2, Carrizo's microarchitectural changes help with CineBench 15 as well. Kaveri appearing on the same level as Trinity/Richland for single threaded is as expected, with the better multithreading handling coming through in the second test.
HandBrake v0.9.9: link
For HandBrake, we take two videos (a 2h20 640x266 DVD rip and a 10min double UHD 3840x4320 animation short) and convert them to x264 format in an MP4 container. Results are given in terms of the frames per second processed, and HandBrake uses as many threads as possible.
Typically we expect something like video conversion to be memory intensive, especially with codec decone/encode, however the base microarchitecture gives Carrizo an 8% lead and a 9% lead over Kaveri in our low quality and double UHD tests.
Hybrid x265
Hybrid is a new benchmark, where we take a 4K 1500 frame video and convert it into an x265 format without audio. Results are given in frames per second.
However, with x265. both Kaveri and Carrizo perform similarly.
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mrdude - Thursday, July 14, 2016 - link
Fantastic work, Ian. Now if AMD put half as much work into their uArchs as you did into reviewing them, we might finally get somewhere =PGeranium - Thursday, July 14, 2016 - link
Ian,Exynos 7420 and Apple A9 is built on Samsang's 14nm LPE. Exynos 8890 and Snapdragon 820 is built on 14nm LPP.
Vlad_Da_Great - Thursday, July 14, 2016 - link
AMD CPU R&D has been outsourced pretty much close to an 1 year ago. Even Jim Keller left before anything(silicon) was remotely close to be released. AMD has submitted on the CPU front, and now with the another failure from the RX 480 power fiasco it seems in the GPU segment too. ZEN is just a myth for the small minded amoebas. The closest they can come to is Haswell, even in some benchmarks they will be far behind.Intel has reported times in many improvement over the 4/5y spam CPU's. AMD can barely get 30% and in some synthetic benchmarks they are below something was produced/developed half a decade ago.
TheinsanegamerN - Friday, July 15, 2016 - link
You have sources for your ludicrous claims?wumpus - Friday, July 15, 2016 - link
Zen tapped out. Thus the drawdown. But if you think Zen will compare as well to Intel silicon as the 480 does to the 1060, remember that Intel is still hand-laying out the transistors and AMD is using autorouters.Hopefully AMD will at least be able to get back to producing "the cheap stuff', but that is their best hope. They've pretty much surrendered.
Calculatron - Thursday, July 14, 2016 - link
Great article, overall! I am glad to see someone finally review the product.I was hoping, however, that you would come across this strange "throttling" issue that this CPU seems to have while playing certain games (not all games, just certain ones). Some people have started threads on Tom's Hardware, and I started one on AMD's own forums:
https://community.amd.com/thread/198618
http://www.tomshardware.com/answers/id-3054721/ath...
DominionSeraph - Thursday, July 14, 2016 - link
Yeesh, the barest overclock physically degrades the processor? This likely means it's degrading at stock as they've pushed a 35W part to 65W and beyond.Sherlock - Thursday, July 14, 2016 - link
/rantWho's your web-designer Anandtech - seriously - I see a big banner at the top & two big ads on the left & right of the page. I am so pissed by the design - I actually calculated the pixel count - only 24% of the screen is dedicated to content - excluding the large Anandtech logo & the menu bars - 10% for the screen is content - please don't kill the site with such crap
rant/
Also - "For clarity, hand was from AMD but not Lisa Su's" :)
DominionSeraph - Friday, July 15, 2016 - link
A narrow column is more readable. Who cares what's on the sides?The_Assimilator - Friday, July 15, 2016 - link
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