disk speed comparison

2010 iMac

Results	70.58	
	System Info		
		Xbench Version		1.3
		System Version		10.10.4 (14E46)
		Physical RAM		16384 MB
		Model		iMac10,1
		Drive Type		Hitachi HDE721010SLA330
	Disk Test	70.58	
		Sequential	149.30	
			Uncached Write	201.48	123.71 MB/sec [4K blocks]
			Uncached Write	178.00	100.71 MB/sec [256K blocks]
			Uncached Read	88.97	26.04 MB/sec [4K blocks]
			Uncached Read	201.15	101.10 MB/sec [256K blocks]
		Random	46.21	
			Uncached Write	15.68	1.66 MB/sec [4K blocks]
			Uncached Write	167.59	53.65 MB/sec [256K blocks]
			Uncached Read	94.36	0.67 MB/sec [4K blocks]
			Uncached Read	160.62	29.80 MB/sec [256K blocks]

2011 MBP with SSD

Results	492.92	
	System Info		
		Xbench Version		1.3
		System Version		10.10.5 (14F27)
		Physical RAM		16384 MB
		Model		MacBookPro8,2
		Drive Type		solid
	Disk Test	492.92	
		Sequential	314.61	
			Uncached Write	529.81	325.30 MB/sec [4K blocks]
			Uncached Write	552.35	312.52 MB/sec [256K blocks]
			Uncached Read	133.08	38.95 MB/sec [4K blocks]
			Uncached Read	665.86	334.66 MB/sec [256K blocks]
		Random	1137.78	
			Uncached Write	613.25	64.92 MB/sec [4K blocks]
			Uncached Write	1001.19	320.52 MB/sec [256K blocks]
			Uncached Read	3417.65	24.22 MB/sec [4K blocks]
			Uncached Read	1684.70	312.61 MB/sec [256K blocks]