New Low-Cost iMac Nearly 50% Slower in Multi-Core, 10% Slower in Single-Core Benchmarks
Following today's launch of a new entry-level iMac model featuring an ultra-low voltage Intel processor actually used in the MacBook Air, the new iMac appears to have shown up in Geekbench's benchmarking database. The use of an ultra-low voltage chip in the iMac is a somewhat curious move for Apple, as the company has traditionally used much more powerful desktop processors in the line.
As expected, the new machine posts relatively low 64-bit scores of 2820 in single-core mode and 5435 in multi-core mode. These scores are marginally better than the 2690/5254 scores posted by the current-generation MacBook Air running the same chip and roughly 10% slower than the 3168 single-core score from the previous low-end iMac model, which remains available.
But where this new low-end iMac falls far short of the previous low-end model is in multi-core performance, where the older model clocks in at 10253. This major difference is due primarily to the chip used in the new low-end model being a dual-core chip, while the older low-end chip is quad-core.
The new low-end iMac comes in $200 cheaper than the previous entry-level model, but for that savings users will sacrifice some CPU and graphics performance and will have a 500 GB hard drive rather than the 1 TB drive included in the more expensive low-end model.
Update 12:25 PM: Primate Labs' John Poole has shared a blog post putting the new low-end iMac's performance in perspective compared to other iMac models and highlighting a Tweet from Ars Technica's Andrew Cunningham noting that Apple's decision to use a chip from its MacBook Air line may have been made for graphics reasons.
Update 2: The initial benchmarks for the new low-end iMac were taken in 64-bit mode, while the data was compared to 32-bit results from other machines. This article has been updated to compare 64-bit scores across all machines.
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