电脑是给人用的，为什么要看参数？耳机是给人用的，为什么要看参数？ 第1页

路过强答一番， 没被邀请就来答， 实在是很冒昧。

但是为了俺可怜的盐值， 俺豁出去了。

电脑是给人用的，为什么要看参数？

俺其实是不看 参数的。

俺只看重量和内存大小。

话说 1996 年的时候， 俺就用过内存 256MB 以上的电脑， 从那时起就对内存有了一种畸恋 （Fetishism）.

最近报完税了，兜里还剩点零花钱，思量着买个电脑来玩玩。最后看上了带 256GB 内存 （32x8GB）+ 24核CPU (4X6c) 的Dell PowerEdge R900 .

经过漫长的等待， 冰天雪地的早上， 终于到货了。 快递公司的司机问， 这纸盒里面啥玩意那么重， 差不多 100 磅了， 不会是尸体吧？俺说是俺的二手电脑。运费 300 多刀。

俺手无缚鸡之力， 一个人根本抬不起来。 用滚的办法， 一路将箱子滚到了地下室， 再用滚动的办法把开了箱的电脑滚上了架子。

上个玩家在里面装了个 Windows 2012 Server 评估版， 俺觉得碍眼就用 Fedora 把它替代了。

如图：

。

分享一点经验：

1. 风扇声音确实有点大，如果只插上一个电源 开机后的几十秒，和半匹~一匹马力的吸尘器差不多。（机器认为是故障，所以风扇不降速）

2. 如果插上两个电源， 正常运行的时候， 风扇声音会下降很多很多。 如图：

。

3. 32 条 8GB 内存， 在运输过程中可能会松脱， 松脱的话黄灯会亮。

4. 软起动， 例如 reboot , 不会再发出喷气机般的巨响。

5. 耗电量明天再测。

电脑和耳机有啥关系呢？

俺打算用这个电脑来仿真耳机以及电路， 而且这个电脑还不够一个 Sennheiser HD800 贵。

您信吗？ 俺信了， 而且买回家了。

256GB 内存 （32x8GB）+ 24核CPU (4X6c) 的Dell PowerEdge R900

当然， 这是俺 DIY 家庭微型集群的第一步， 敬请大家指点：

。

贝奥武夫机群（Beowulf cluster），又称贝奥伍尔夫集群，是一种高性能的并行计算机集群结构，特点是使用廉价的个人电脑硬件组装以达到最优的性能/价格比。得名于古英语著名史诗《贝奥武夫》。于1994年最早在NASA为Donald Becker等人开发，是目前科学计算中流行的一类并行计算机。最常见的方式是把相同个人电脑作为组装单元，运行Linux或BSD系统。各个单元之间通过小型TCP/IP局域网和有关的程序库来分配计算任务和通信。常用的并行程序库包括MPI和PVM。

【更新】

运行了一夜，没有什么问题出现。每一条ECC内存似乎都是好的：

dmidecode -t 17

# dmidecode 3.2

Getting SMBIOS data from sysfs.

SMBIOS 2.5 present.

Handle 0x1100, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 1

Locator: DIMM A1

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1101, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 1

Locator: DIMM B1

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1102, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 2

Locator: DIMM C1

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1103, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 2

Locator: DIMM D1

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1104, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 3

Locator: DIMM A2

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1105, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 3

Locator: DIMM B2

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1106, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 4

Locator: DIMM C2

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1107, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 4

Locator: DIMM D2

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1108, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 5

Locator: DIMM A3

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1109, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 5

Locator: DIMM B3

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x110A, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 6

Locator: DIMM C3

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x110B, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 6

Locator: DIMM D3

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x110C, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 7

Locator: DIMM A4

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x110D, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 7

Locator: DIMM B4

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x110E, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 8

Locator: DIMM C4

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x110F, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 8

Locator: DIMM D4

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1110, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 9

Locator: DIMM A5

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1111, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 9

Locator: DIMM B5

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1112, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 10

Locator: DIMM C5

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1113, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 10

Locator: DIMM D5

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1114, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 11

Locator: DIMM A6

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1115, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 11

Locator: DIMM B6

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1116, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 12

Locator: DIMM C6

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1117, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 12

Locator: DIMM D6

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1118, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 13

Locator: DIMM A7

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x1119, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 13

Locator: DIMM B7

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x111A, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 14

Locator: DIMM C7

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x111B, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 14

Locator: DIMM D7

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HMP31GF7EMR4C-Y5D5

Rank: 4

Handle 0x111C, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 15

Locator: DIMM A8

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HYMP31GF72CMP4D5Y5

Rank: 4

Handle 0x111D, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 15

Locator: DIMM B8

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HYMP31GF72CMP4D5Y5

Rank: 4

Handle 0x111E, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 16

Locator: DIMM C8

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HYMP31GF72CMP4D5Y5

Rank: 4

Handle 0x111F, DMI type 17, 28 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 72 bits

Data Width: 64 bits

Size: 8192 MB

Form Factor: FB-DIMM

Set: 16

Locator: DIMM D8

Bank Locator: Not Specified

Type: DDR2 FB-DIMM

Type Detail: Synchronous

Speed: 667 MT/s

Manufacturer: 80AD7FB380AD

Serial Number: Omitted

Asset Tag: Omitted

Part Number: HYMP31GF72CMP4D5Y5

Rank: 4

[root@fat4u ~]#

[root@fat4u ~]#

【更新】

散耗功率 652W （平稳） ~ 750 W (启动后10秒内)

耳机是给人用的，为什么要看参数？

这个问题有点难, 耳机的参数可以允许用户解一元一次方程(一块钱一次)， 算出他们要不要用耳放。也可以方便采购的人做横向对比。

显示器是给人用的，为什么要看参数？

这个问题有点难, 显示器的参数可以方便投标的人做标书。

眼镜是给人用的，为什么要看参数？

这个问题有点难, 眼镜的参数例如度数和瞳距可以超市卖便宜眼镜啊。不用柱面镜的，看好两边的度数和瞳距就能下手了。

面包是给人吃的，为什么要看保质期？

这个问题有点难, 面包的保质期可以让人知道是不是安全。过了保质期也是可以吃的， 不过就是霉菌的味道比较呛。一般人咽不下。

医生是给人看病的，为什么要化验？

这个问题简单, 化验是因为望闻问切和问病史这些步骤得不出初步结论。医生没办法了就只好求助于化验了。 古代是不用化验的。

【送个段子】

乾隆皇帝与悬丝诊脉

一日乾隆皇帝宣御医看病，御医不知那位妃子染恙，心想先讨吉利再说。于是就在悬丝上诊了一会儿“脉”后，喜形于色地说：“启禀万岁，喜脉！”乾隆一听，暗地笑了，说道“凭这根细丝诊脉看病？朕不信！”御医忙磕头道：“臣诊脉，从未有过差错。”乾隆命太监带御医去看悬丝另一头。原来，皇帝想试试御医的本领，丝线的另一端并未系上病人的手腕，而是系在凳腿上。御医看了大吃一惊，险些吓晕——这可欺君之罪啊！但他不愧有经验的老御医，稍定了一下神，他搬起凳子细细查看一遍后，说：“敢请劈开凳腿，便知微臣讲的真假。”乾隆立即命太监取出利斧劈开凳腿，只见凳腿中有一小蛀洞洞内有只小虫正蠕动，御医忙跪奏：“万岁请看此为木之孕也，叫喜脉。”皇上一听，面露喜色点头表示认同，这才命其给正生病的格格诊治。此这位御医已吓得大汗淋漓，连衣襟都湿透了。

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