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.
|In the lab: FLIR's One thermal camera||43|
|Black Friday deals: Dell's U3415 curved monitor for $650 and more||32|
|Abu Dhabi government fund may be shopping GlobalFoundries||63|
|Asus goes for the gold with its 20th Anniversary GTX 980 Ti||8|
|MSI's Eco motherboards let owners fine-tune power consumption||10|
|Gigabyte's Z170X-Gaming G1 motherboard reviewed||18|
|Star Wars Battlefront video review||40|
|Club 3D active adapters convert DisplayPort 1.2 to HDMI 2.0||24|
|Phanteks' Power Splitter lets two systems run on one PSU||45|