Doh! I just discovered that I was running in Single channel mode!😱
I've now moved a RAM stick so that I'm in Dual Channel mode ,whilst SSS has shown a small increase in bandwidth ,latency2.exe shows a slight increase in latency🙁.I wonder which one of the 2 will be faster? ,we'll see when the next WU has been finished.
Btw some benchmarks
SSSandra
SC
Int 2490 Mb/s
Float 2331 Mb/s
DC
Int 2555 Mb/s
Float 2423 Mb/s
Latency readings
SC
Array 4 Byte 64 Byte
Size stride stride
(kb) (ticks) (ticks)
1 3.0 3.0
2 3.0 3.0
3 3.0 3.0
4 3.0 3.0
6 3.0 3.0
8 3.0 3.0
10 3.0 3.0
12 3.0 3.0
14 3.0 3.0
16 3.0 3.0
18 3.0 3.0
20 3.0 3.0
22 3.0 3.0
24 3.0 3.0
26 3.0 3.0
28 3.0 3.0
30 3.0 3.0
32 3.0 3.0
36 3.0 3.0
40 3.0 3.0
44 3.0 3.0
48 3.0 3.0
52 3.0 3.0
56 3.0 3.0
60 3.0 3.0
64 3.0 3.0
72 3.4 8.6
80 3.7 13.2
88 4.0 16.9
96 4.2 20.0
104 4.2 20.0
112 4.2 20.0
120 4.2 20.0
128 4.2 20.0
144 4.2 20.0
160 4.2 20.0
176 4.2 20.0
192 4.2 20.0
208 4.2 20.0
224 4.2 20.0
240 4.2 20.0
256 4.2 20.0
288 5.0 34.2
320 7.2 71.5
352 10.6 125.8
384 11.5 139.8
416 11.6 141.3
448 11.6 141.1
480 11.6 141.2
512 11.6 141.1
etc
DC
Array 4 Byte 64 Byte
Size stride stride
(kb) (ticks) (ticks)
1 3.0 3.0
2 3.0 3.0
3 3.0 3.0
4 3.0 3.0
6 3.0 3.0
8 3.0 3.0
10 3.0 3.0
12 3.0 3.0
14 3.0 3.0
16 3.0 3.0
18 3.0 3.0
20 3.0 3.0
22 3.0 3.0
24 3.0 3.0
26 3.0 3.0
28 3.0 3.0
30 3.0 3.0
32 3.0 3.0
36 3.0 3.0
40 3.0 3.0
44 3.0 3.0
48 3.0 3.0
52 3.0 3.0
56 3.0 3.0
60 3.0 3.0
64 3.0 3.0
(from here on latency is a little higher than SC mode in 64 Byte stride)
72 3.4 9.1
80 3.7 13.6
88 4.0 17.8
96 4.2 20.9
104 4.2 20.9
112 4.2 20.9
120 4.2 20.9
128 4.2 20.9
144 4.2 20.9
160 4.2 20.9
176 4.2 20.9
192 4.2 20.9
208 4.2 20.9
224 4.2 20.9
240 4.2 20.9
256 4.2 20.9
288 4.2 21.0
(from here on latency is a little higher than SC mode for 4byte stride)
320 8.2 44.6
352 12.0 148.3
384 12.1 150.4
416 12.1 148.9
448 12.1 148.4
480 12.1 149.2
512 12.1 149.1
etc
Btw the latency readings stay the same from 512k upto 4096k