Following Apple’s shipments of the first 1.3GHz versions of the 12″ MacBook this week, benchmarks have started to appear online for the new Intel Core M-5Y71 machine. Geekbench 3 shows the following results for each model, which vary based on the testing mode (32/64-bit) and number of processor cores used (single or multiple cores).

MacBook 1.1GHz

  • 32-Bit: Single-Core Average 2212, Multi-Core Average 4070
  • 64-Bit: Single-Core Average 2428, Multi-Core Average 4592

MacBook 1.2GHz

  • 32-Bit: Single-Core Average 2348, Multi-Core Average 4603
  • 64-Bit: Single-Core Average 2579, Multi-Core Average 5185

MacBook 1.3GHz

  • 32-Bit: Single-Core Average 2387, Multi-Core Average 4673
  • 64-Bit: Single-Core Average 2816, Multi-Core Average 5596

The 1.3GHz MacBook’s 64-Bit scores represent 16%-22% improvements over the 1.1GHz model, and 8%-9% gains over the 1.2GHz model. On April 27, we updated the 32-Bit scores now that additional benchmarks have been posted; they show smaller gains over the lower-speed models. More details are below…

iMac 27"

Combing through Geekbench 3 results, the 1.3GHz MacBook’s scores compare most directly to Apple’s 1.4GHz Macs, such as the entry-level 21.5″ iMac and early 2014 entry-level MacBook Air. The latter model achieved Single- and Multi-Core scores in the 2400/4700 range for 32-Bit tests, and 2700/5300 for 64-Bit tests.

Geekbench 3’s Single-Core scores reflect the machines’ relative speeds when performing non-demanding tasks such as basic web browsing and word processing. Multi-Core scores demonstrate the machine’s ability to perform more complex tasks demanding additional processing power, such as video rendering.

The 1.3GHz MacBook is available only as a custom build-to-order model, but authorized resellers are now offering it at discounted prices.