Xbench results of iMac 5K from late 2014 base model and iMac 21.5" from mid 2011 compared

graphics-compared.md

Format

Test Name 		Xbench Score		Measured Values

Apple iMac "Core i5" 2.5 21.5-Inch (Mid-2011)

Base configuration (AMD Radeon HD 6750M 512MB). Full specs at Everymac.

Quartz Graphics Test

overall: 281.40

Line			339.12	22.58 	Klines/sec [50% alpha]
Rectangle		294.73	87.99 	Krects/sec [50% alpha]
Circle			248.56	20.26 	Kcircles/sec [50% alpha]
Bezier			264.52	6.67 	Kbeziers/sec [50% alpha]
Text			276.00	17.26 	Kchars/sec

OpenGL Graphics Test

overall: 238.52

Spinning Squares		238.52		302.57 frames/sec

User Interface Test

overall: 34.64

Elements		34.64			158.97 refresh/sec

Apple iMac "Core i5" 3.5 27-Inch (Retina 5K, 2014)

Base configuration (Radeon R9 M290X). Specs at Everymac.

Quartz Graphics Test

overall: 201.38

Line			220.39	14.67 Klines/sec [50% alpha]
Rectangle	208.51	62.25 Krects/sec [50% alpha]
Circle		194.59	15.86 Kcircles/sec [50% alpha]
Bezier		209.32	5.28 Kbeziers/sec [50% alpha]
Text			179.23	11.21 Kchars/sec

OpenGL Graphics Test

overall: 245.35

Spinning Squares		245.35		311.24 frames/sec

User Interface Test

overall: 36.10

Elements		36.10		165.66 refresh/sec

imac-5k-cpu

Results	392.25	
	System Info		
		Xbench Version		1.3
		System Version		10.10.1 (14B25)
		Physical RAM		8192 MB
		Model		iMac15,1
		Drive Type		Macintosh HD
	CPU Test	392.25	
		GCD Loop	388.93	20.50 Mops/sec
		Floating Point Basic	329.67	7.83 Gflop/sec
		vecLib FFT	321.09	10.59 Gflop/sec
		Floating Point Library	676.23	117.75 Mops/sec

imac-5k-disk

Results	583.96	
	System Info		
		Xbench Version		1.3
		System Version		10.10.1 (14B25)
		Physical RAM		8192 MB
		Model		iMac15,1
		Drive Type		Macintosh HD
	Disk Test	583.96	
		Sequential	400.57	
			Uncached Write	509.21	312.65 MB/sec [4K blocks]
			Uncached Write	331.54	187.59 MB/sec [256K blocks]
			Uncached Read	248.56	72.74 MB/sec [4K blocks]
			Uncached Read	1017.81	511.54 MB/sec [256K blocks]
		Random	1077.06	
			Uncached Write	1420.90	150.42 MB/sec [4K blocks]
			Uncached Write	521.99	167.11 MB/sec [256K blocks]
			Uncached Read	3500.85	24.81 MB/sec [4K blocks]
			Uncached Read	1236.63	229.47 MB/sec [256K blocks]

imac-5k-memory

Results	700.60	
	System Info		
		Xbench Version		1.3
		System Version		10.10.1 (14B25)
		Physical RAM		8192 MB
		Model		iMac15,1
		Drive Type		Macintosh HD
	Memory Test	700.60	
		System	873.39	
			Allocate	2694.69	9.90 Malloc/sec
			Fill	541.40	26324.31 MB/sec
			Copy	821.86	16975.20 MB/sec
		Stream	584.89	
			Copy	578.70	11952.78 MB/sec
			Scale	586.92	12125.55 MB/sec
			Add	587.27	12510.20 MB/sec
			Triad	586.76	12552.32 MB/sec

imac-5k-thread

Results	1600.91	
	System Info		
		Xbench Version		1.3
		System Version		10.10.1 (14B25)
		Physical RAM		8192 MB
		Model		iMac15,1
		Drive Type		Macintosh HD
	Thread Test	1600.91	
		Computation	1600.91	32.43 Mops/sec, 4 threads

imac-mid-2011-all

Results	133.94	
	System Info		
		Xbench Version		1.3
		System Version		10.10.1 (14B25)
		Physical RAM		4096 MB
		Model		iMac12,1
		Drive Type		Macintosh SSD
	CPU Test	294.89	
		GCD Loop	326.08	17.19 Mops/sec
		Floating Point Basic	210.09	4.99 Gflop/sec
		vecLib FFT	270.41	8.92 Gflop/sec
		Floating Point Library	490.29	85.37 Mops/sec
	Memory Test	586.89	
		System	653.09	
			Allocate	1998.69	7.34 Malloc/sec
			Fill	401.91	19541.73 MB/sec
			Copy	623.03	12868.41 MB/sec
		Stream	532.88	
			Copy	523.42	10810.93 MB/sec
			Scale	515.81	10656.43 MB/sec
			Add	553.79	11796.94 MB/sec
			Triad	540.12	11554.56 MB/sec
	Quartz Graphics Test	281.40	
		Line	339.12	22.58 Klines/sec [50% alpha]
		Rectangle	294.73	87.99 Krects/sec [50% alpha]
		Circle	248.56	20.26 Kcircles/sec [50% alpha]
		Bezier	264.52	6.67 Kbeziers/sec [50% alpha]
		Text	276.00	17.26 Kchars/sec
	OpenGL Graphics Test	238.52	
		Spinning Squares	238.52	302.57 frames/sec
	User Interface Test	34.64	
		Elements	34.64	158.97 refresh/sec
	Disk Test	323.96	
		Sequential	197.27	
			Uncached Write	239.40	146.99 MB/sec [4K blocks]
			Uncached Write	180.54	102.15 MB/sec [256K blocks]
			Uncached Read	115.19	33.71 MB/sec [4K blocks]
			Uncached Read	532.11	267.44 MB/sec [256K blocks]
		Random	905.43	
			Uncached Write	1824.21	193.11 MB/sec [4K blocks]
			Uncached Write	410.08	131.28 MB/sec [256K blocks]
			Uncached Read	1623.84	11.51 MB/sec [4K blocks]
			Uncached Read	1226.61	227.61 MB/sec [256K blocks]

imac-mid-2011-thread

Results	732.12	
	System Info		
		Xbench Version		1.3
		System Version		10.10.1 (14B25)
		Physical RAM		4096 MB
		Model		iMac12,1
		Drive Type		Macintosh SSD
	Thread Test	732.12	
		Computation	732.12	14.83 Mops/sec, 4 threads