iMac (27-inch Retina Late 2015) vs iMac (21.5-inch Mid 2017)

Geekbench Scores

iMac (27-inch Retina Late 2015) iMac (21.5-inch Mid 2017)
Single-Core Score 6171 4566
Multi-Core Score 21472 9570
Geekbench 4.1.0 Geekbench 4.3.4 Tryout

System Information

iMac (27-inch Retina Late 2015) iMac (21.5-inch Mid 2017)
Operating System macOS 10.12.4 (Build 16E195) macOS 10.14.5 (Build 18F132)
Model iMac (27-inch Retina Late 2015) iMac (21.5-inch Mid 2017)
Processor Intel Core i7-6700K @ 4.01 GHz
1 Processor, 4 Cores, 8 Threads 		Intel Core i5-7360U @ 2.30 GHz
1 Processor, 2 Cores, 4 Threads
Processor ID GenuineIntel Family 6 Model 94 Stepping 3 GenuineIntel Family 6 Model 142 Stepping 9
L1 Instruction Cache 32 KB x 4 32 KB x 2
L1 Data Cache 32 KB x 4 32 KB x 2
L2 Cache 256 KB x 4 256 KB x 2
L3 Cache 8192 KB 4096 KB
Motherboard Apple Inc. Mac-B809C3757DA9BB8D iMac17,1 Apple Inc. Mac-4B682C642B45593E iMac18,1
BIOS Apple Inc. IM171.88Z.0105.B08.1604111319 Apple Inc. 172.0.0.0.0
Memory 32.00 GB 0 MHz RAM 8.00 GB 2133 MHz DDR4

Single-Core Performance

iMac (27-inch Retina Late 2015) iMac (21.5-inch Mid 2017)
Single-Core Score 6171 4566
AES 5369
4.04 GB/sec 		2984
2.25 GB/sec
LZMA 5524
8.63 MB/sec 		3943
6.16 MB/sec
JPEG 6270
50.5 Mpixels/sec 		4502
36.2 Mpixels/sec
Canny 5862
81.3 Mpixels/sec 		4191
58.1 Mpixels/sec
Lua 6107
6.28 MB/sec 		4564
4.69 MB/sec
Dijkstra 6352
4.30 MTE/sec 		4913
3.32 MTE/sec
SQLite 5482
152.0 Krows/sec 		3925
108.8 Krows/sec
HTML5 Parse 5293
24.0 MB/sec 		4020
18.3 MB/sec
HTML5 DOM 7007
6.35 MElements/sec 		5312
4.81 MElements/sec
Histogram Equalization 5396
168.6 Mpixels/sec 		4021
125.7 Mpixels/sec
PDF Rendering 6207
164.9 Mpixels/sec 		5232
139.0 Mpixels/sec
LLVM 10281
706.9 functions/sec 		7539
518.4 functions/sec
Camera 6542
18.1 images/sec 		4798
13.3 images/sec
SGEMM 6601
139.5 Gflops 		4672
98.8 Gflops
SFFT 6753
16.8 Gflops 		5112
12.7 Gflops
N-Body Physics 5944
4.44 Mpairs/sec 		4414
3.30 Mpairs/sec
Ray Tracing 5472
799.1 Kpixels/sec 		4087
596.8 Kpixels/sec
Rigid Body Physics 6867
20102.7 FPS 		5059
14810.6 FPS
HDR 7042
25.5 Mpixels/sec 		5367
19.5 Mpixels/sec
Gaussian Blur 6724
117.8 Mpixels/sec 		4849
84.9 Mpixels/sec
Speech Recognition 6888
58.9 Words/sec 		4617
39.5 Words/sec
Face Detection 5925
1.73 Msubwindows/sec 		4400
1.29 Msubwindows/sec
Memory Copy 5815
16.1 GB/sec 		4580
12.7 GB/sec
Memory Latency 6628
65.3 ns 		6200
69.8 ns
Memory Bandwidth 4965
26.5 GB/sec 		3246
17.3 GB/sec

Multi-Core Performance

iMac (27-inch Retina Late 2015) iMac (21.5-inch Mid 2017)
Multi-Core Score 21472 9570
AES 16648
12.5 GB/sec 		9716
7.32 GB/sec
LZMA 24176
37.8 MB/sec 		9618
15.0 MB/sec
JPEG 30099
242.2 Mpixels/sec 		11278
90.7 Mpixels/sec
Canny 24135
334.7 Mpixels/sec 		10069
139.6 Mpixels/sec
Lua 24073
24.7 MB/sec 		9091
9.34 MB/sec
Dijkstra 23140
15.7 MTE/sec 		14869
10.1 MTE/sec
SQLite 20032
555.4 Krows/sec 		8655
239.9 Krows/sec
HTML5 Parse 22471
102.0 MB/sec 		8842
40.1 MB/sec
HTML5 DOM 26832
24.3 MElements/sec 		12560
11.4 MElements/sec
Histogram Equalization 23557
736.1 Mpixels/sec 		9080
283.7 Mpixels/sec
PDF Rendering 25026
664.9 Mpixels/sec 		12521
332.6 Mpixels/sec
LLVM 48424
3.33 Kfunctions/sec 		18395
1.26 Kfunctions/sec
Camera 30229
83.8 images/sec 		11627
32.2 images/sec
SGEMM 18412
389.2 Gflops 		8612
182.0 Gflops
SFFT 28231
70.4 Gflops 		10188
25.4 Gflops
N-Body Physics 25858
19.3 Mpairs/sec 		9883
7.38 Mpairs/sec
Ray Tracing 25513
3.73 Mpixels/sec 		9746
1.42 Mpixels/sec
Rigid Body Physics 36278
106199.5 FPS 		13636
39918.0 FPS
HDR 29100
105.5 Mpixels/sec 		12068
43.7 Mpixels/sec
Gaussian Blur 27138
475.4 Mpixels/sec 		9907
173.6 Mpixels/sec
Speech Recognition 16538
141.5 Words/sec 		10395
88.9 Words/sec
Face Detection 28221
8.24 Msubwindows/sec 		10414
3.04 Msubwindows/sec
Memory Copy 6542
18.1 GB/sec 		5467
15.1 GB/sec
Memory Latency 6607
65.5 ns 		5533
78.2 ns
Memory Bandwidth 5258
28.1 GB/sec 		3647
19.5 GB/sec

Compare

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