zen3跑aida64内存跑分,是在跑单通道的分然后数值乘2?

KxngDemon-avatar

KxngDemon

2021-08-26T03:52:38+00:00

hwinfo64可显示zen3 imc报告的实时内存读写带宽信息
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-l88fK18T1kSfc-b9.png[/img]

接下来验证这个数据的可靠性。
5900x设置内存频率3800,理论带宽上限为60.8G/s。
运行Intel Memory Latency Checker的读取带宽测试,实时读取带宽53G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-gxllK4ToS8a-1g.png[/img]
Memory Latency Checker的测试结果也是53G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-6xxnKeT3cSii-2v.png[/img]

运行MemTestPro内存烧机,实时带宽约为50G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-37opK4ToS85-1b.png[/img]

运行prime95 large ffts烧机,实时带宽约为49G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-bsruK4ToS7y-18.png[/img]

以上测试表明该实时带宽的数值是可靠和准确的。

而运行aida64内存跑分的读取带宽测试中,实时带宽仅有29G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-gyvcK5ToS80-1h.png[/img]
写入带宽测试中,实时带宽仅有27G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-8m82K4ToS8d-1f.png[/img]
复制带宽测试中,实时带宽只有28G/s:
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-4dyoK4ToS7x-1a.png[/img]

刚好分别大约是aida64测试结果的二分之一
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2d-fqtyZeT3cSif-hq.png[/img]
可以认为aida64的内存跑分只实际使用了内存带宽的一半左右,跑分结果是其直接乘2倍。
难道aida64的内存跑分实际是在跑单通道?
Sweet Prince-avatar

Sweet Prince

matisse和vermeer本来就是写入减半啊
KxngDemon-avatar

KxngDemon

Reply to [pid=544991216,28243823,1]Reply[/pid] Post by [uid=27254284]UID27254284[/uid] (2021-08-27 12:05)
双ccd写入不减半,而且你应该没仔细看我帖子说的是什么内容,这两件事完全是不相关的
Sweet Prince-avatar

Sweet Prince

[quote][pid=544992886,28243823,1]Reply[/pid] Post by [uid=38922157]嗯嗯嗯嗯什么[/uid] (2021-08-27 12:11):

双ccd写入不减半,而且你应该没仔细看我帖子说的是什么内容,这两件事完全是不相关的[/quote]双ccd也是写入减半,aida64跑分看不出来罢了
KxngDemon-avatar

KxngDemon

Reply to [pid=544995387,28243823,1]Reply[/pid] Post by [uid=27254284]UID27254284[/uid] (2021-08-27 12:20)
5900x用mlc可以跑到50G/s的写入带宽,减半的话这是不可能做到的
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2e-38z5K6T3cSl0-q.png[/img]
[img]https://img.nga.178.com/attachments/mon_202108/27/9aQ8j2e-c3tbK5ToS81-1j.png[/img]
算了别说这个话题了,这个和主楼讨论的内容毫无关系,再说下去就歪楼了
CHUNDA-avatar

CHUNDA

有意思,插个眼。