Memory subsystem performance
A couple of quick synthetic memory benchmarks confirm our 1866MHz memory config is indeed both higher bandwidth and lower latency than our default 1333MHz setup. The A8-3850 with 1866MHz RAM manages more throughput in Stream than any flavor of Phenom II, and its memory latency is comparable.
However, these results also serve as a reminder of how proficient Intel's newer CPU architectures are at wringing as much as possible from their attached memory. The Core i3-2100 manages 5GB/s more throughput with 1333MHz DIMMs—at a 2T command rate, no less—than the A8-3850 does with 1866MHz DIMMs with a 1T command rate. The Intel processors hide access latencies better, too.
These differences are, in part, a result of Intel's use of larger caches with smart data pre-fetching algorithms that appear to make good guesses about what data our tests will request next. Llano adds a somewhat larger 1MB L2 cache per core and a tweaked pre-fetch algorithm, but it has also shed its L3 cache. In the grand scheme, the changes don't appear to add up to much.
|Here are two of ASRock's next-gen Z170 motherboards||13|
|Zotac and EVGA liquify the GeForce GTX Titan X||7|
|Nvidia's GameWorks program goes mobile||3|
|Lenovo's ThinkPad 10 tablet looks like a Surface 3 in a suit||9|
|Deal of the week: Asus' Core M ultrabook for $599 and Project Cars for $34||8|
|SourceForge adds software bloat to more installers||43|
|Google Jumps on panoramic VR video||17|
|Catalyst 15.5 betas promise gains in Project Cars, Witcher 3||28|
|Google unveils new Android OS, releases developer preview||37|