Regadless of the RAM 4 or 8 GB the strap doesn't matter, its about the memory type not the size of the memory.
It's not good, cause hynix 4Gb is AJR memory, but 8Gb - MJR memory. Both types needs it's own straps.
AND yet...
-etha 1 -asm 2 -y compute -mode 2 -estale 1 -showdiff 1 -ftime 10 -rxboost 21 -strap POL4E3@2190,POL8M2@2215,POL8H1@2215,POL8H1@2200,POL8H1@2250 -mvddc 900 -cclock 1215,1300,1250,1235,1235 -cvddc 900 -estale 1 -mode 1 -lidag 3
is the following results...
AMD Cards available: 5
GPU #0: Ellesmere (Radeon RX 580 Series),
4096 MB available, 36 compute units (pci bus 1:0:0)
GPU #0 recognized as Radeon RX 480/580
GPU #1: Ellesmere (Radeon RX 590 Series), 8192 MB available, 36 compute units (pci bus 2:0:0)
GPU #1 recognized as Radeon RX 480/580
GPU #2: Ellesmere (Radeon RX 570 Series), 8192 MB available, 32 compute units (pci bus 4:0:0)
GPU #2 recognized as Radeon RX 470/570
GPU #3: Ellesmere (Radeon RX 580 Series), 8192 MB available, 36 compute units (pci bus 5:0:0)
GPU #3 recognized as Radeon RX 480/580
GPU #4: Ellesmere (Radeon RX 580 Series), 8192 MB available, 36 compute units (pci bus 6:0:0)
GPU #4 recognized as Radeon RX 480/580
POOL/SOLO version
GPU# 0 strap
"POL4E3" is applied successfully, mclock 2190MHz
GPU# 0 -rxboost option is applied successfully
GPU# 1 strap "POL8M2" is applied successfully, mclock 2215MHz
GPU# 1 -rxboost option is applied successfully
GPU# 2 strap "POL8H1" is applied successfully, mclock 2215MHz
GPU# 2 -rxboost option is applied successfully
GPU# 3 strap "POL8H1" is applied successfully, mclock 2200MHz
GPU# 3 -rxboost option is applied successfully
GPU# 4 strap "POL8H1" is applied successfully, mclock 2250MHz
GPU# 4 -rxboost option is applied successfully
ETH:
GPU0 33.125 Mh/s, GPU1 33.531 Mh/s, GPU2 33.381 Mh/s, GPU3 33.120 Mh/s, GPU4 33.531 Mh/s
GPU0 t=58C fan=59% P=68W, GPU1 t=49C fan=45% P=89W, GPU2 t=55C fan=49% P=76W, GPU3 t=53C fan=49% P=99W, GPU4 t=54C fan=39% P=71W
AND....
-mode 1 -asm 2 -estale 1 -showdiff 1 -gser 2 -etha 1 -rxboost 15,21 -strap POL8M2@2115,POL8H1@2150,POL4H1@2075,POL8S2@2150,POL8H4@2100 -mvddc 875 -cclock 1250 -cvddc 900 -lidag 3
Nets the following....
23:11:45:269 2308 AMD Cards available: 5
23:11:45:269 2308 GPU #0: Ellesmere (Radeon RX 580 Series), 8192 MB available, 36 compute units (pci bus 1:0:0)
23:11:45:270 2308 GPU #0 recognized as Radeon RX 480/580
23:11:45:271 2308 GPU #1: Ellesmere (Radeon RX 580 Series), 8192 MB available, 36 compute units (pci bus 5:0:0)
23:11:45:279 2308 GPU #1 recognized as Radeon RX 480/580
23:11:45:280 2308 GPU #2: Ellesmere (Radeon RX 580 Series),
4096 MB available, 36 compute units (pci bus 6:0:0)
23:11:45:295 2308 GPU #2 recognized as Radeon RX 480/580
23:11:45:299 2308 GPU #3: Ellesmere (Radeon RX 580 Series), 8192 MB available, 36 compute units (pci bus 7:0:0)
23:11:45:300 2308 GPU #3 recognized as Radeon RX 480/580
23:11:45:301 2308 GPU #4: Ellesmere (Radeon RX 580 Series), 8192 MB available, 36 compute units (pci bus 8:0:0)
23:11:45:301 2308 GPU #4 recognized as Radeon RX 480/580
23:11:45:302 2308 POOL/SOLO version
23:11:50:932 2308 GPU# 0 strap "POL8M2" is applied successfully, mclock 2115MHz
23:11:50:959 2308 GPU# 0 -rxboost option is applied successfully
23:11:51:054 2308 GPU# 1 strap "POL8H1" is applied successfully, mclock 2150MHz
23:11:51:092 2308 GPU# 1 -rxboost option is applied successfully
23:11:51:189 2308 GPU# 2
strap "POL4H1" is applied successfully, mclock 2075MHz
23:11:51:199 2308 GPU# 2 -rxboost option is applied successfully
23:11:51:305 2308 GPU# 3 strap "POL8S2" is applied successfully, mclock 2150MHz
23:11:51:315 2308 GPU# 3 -rxboost option is applied successfully
23:11:51:413 2308 GPU# 4 strap "POL8H4" is applied successfully, mclock 2100MHz
23:11:51:421 2308 GPU# 4 -rxboost option is applied successfully
13:26:36:944 1550 ETH - Total Speed: 161.160 Mh/s, Total Shares: 4901, Rejected: 0, Time: 86:14
13:26:36:946 1550 ETH: GPU0 31.769 Mh/s, GPU1 32.496 Mh/s
, GPU2 32.005 Mh/s, GPU3 33.046 Mh/s, GPU4 31.844 Mh/s
I bolded the 4 GB cards the first set is Elpida and the second set is Hynix. As you can see the clock speeds turned down in whole group still gets above 32 Mhs. If i run the cards individually it'll go and hold 33/34 Mhs at 2200 and 2250.
I'm talking only about hynix memory. I just know that straps from 4Gb AJR memory didn't work properly on 8GB MJR memory.
Maybe Claymore make different straps on 4 and 8Gb cards with hynix memory. I didn't know. Just pointed...
On my 8Gb hynix memory cards no one strap from Claymore miner didn't give high speed with stability. Even 1st strap can hang all system, but speed is low. Good speed on 3-4 straps, but no stability at all.