IT之家 3 月 5 日消息，得益于颠覆性的 3D 芯片堆叠技术，AMD Ryzen 9 7950X3D 已成为目前最强的游戏处理器之一，但奇怪的是，该公司在发布 Ryzen 7000X3D 时没有提到任何关于其新的第二代 3D V-Cache 细节。

AMD 在最近的一次技术会议上向外媒分享了一些细节。据介绍，这颗 Chiplet 芯片仍采用 7nm 工艺，但峰值带宽提高到了 2.5 TB / s，而初代 3D V-Cache 峰值带宽为 2TB /s。

此外，我们还拿到了 AMD Ryzen 7000 处理器的新型 6nm I / O 芯片的新图片和参数。

总的来说，AMD 第二代 3D V-Cache 技术比第一代技术再次向前迈出了一大步。

首先，AMD 的 3D V-Cache 技术将一颗额外的 L3 SRAM 芯片直接堆叠在计算芯片 (CCD) 芯片的中心，从而将其与温度较高的核心隔离开来。这颗芯片为它带来了 96MB 3D 缓存，从而提高了对延迟敏感类应用程序的性能表现，比如游戏。

AMD 在 2023 年国际固态电路会议 (ISSCC) 上展示了一些关于第二代 3D V-Cache 实现的新技术，并就 Zen 4 架构进行了演示。

AMD 上一代 3D V-Cache 将 L3 SRAM 芯片堆叠在 7nm Zen 3 CCD 上，而新一代的 L3 SRAM 芯片依然坚持采用了 7nm 工艺，但它需要堆叠在更小的 5nm Zen 4 CCD 上。这就造成了尺寸不匹配，因此需要进行一些修改，最终大幅提高了其晶体管密度。

与之前一样，这颗额外的 L3 SRAM 缓存带来了 4 个 clock 的时钟信号延滞，但 L3 芯片和基本芯片之间的带宽增加到 2.5 TB / s，比之前的 2 TB / s 提高了 25%。

这颗 L3 SRAM 芯片通过两种类型的 TSV 硅通孔连接到基础模芯片部分。其中 Power TSV 负责传输能量，Signal TSV 负责传输数据。

在第一代 L3 SRAM 芯片设计中，两种类型的 TSV 都位于基础芯片的 L3 区域，然而随着 5nm 工艺的改进，基础芯片上的 L3 缓存部分的面积现在有所减少。因此，即使 7nm 的 L3 SRAM 芯片面积更小，它现在也与 L2 缓存 (前一代只重叠了 L3 缓存部分) 发生重叠，所以 AMD 不得不改变基本芯片和 L3 SRAM 芯片中的 TSV 连接设计。

随着基础芯片上 5nm L3 高速缓存部分晶体管密度增加，AMD 不得不将 Power TSV 从 L3 扩展到 L2 区域。

对于基础芯片，AMD 在 L3 缓存、数据路径和控制逻辑上实现了 0.68 倍的有效面积缩放（与旧的 7nm 芯片相比），因此 L3 缓存中 TSV 物理空间更小。

Signal TSV 依然保留在基础芯片上的 L3 缓存区域内，但 AMD 通过应用从第一代设计中学到的知识以及 DTCO 改进，将 L3 缓存中的 TSV 区域缩小了 50%，以减少新接口设计中的额外电路。

IT之家提醒，AMD 的 3D 芯片堆叠技术基于 台积电的 SoIC 技术，而台积电的 SoIC 是无凸点的设计，这意味着两个芯片之间的连接不会使用微凸块或焊料。AMD 表示，它使用了相同的基本键合 / 粘合工艺，并进行了持续的工艺和 DTCO 改进，但最小 TSV 间距并未改变。

此外，L3 SRAM 小芯片也与 CPU 内核保持在同一功率区域，因此无法独立调整。也正因为电压不能超过~1.15V，所以配备缓存的小芯片的频率也不会太高。

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彭常寒383050÷2.5+1.8*4.5简便运算 -
蒲丽才15947357435 ______ 50÷2.5+1.8*4.5 =﹙50*4﹚÷﹙2.5*4﹚+0.9*2*4.5 =200÷10+0.9*9 =20+8.1 =28.1

彭常寒383031*2.5+0.9的简便方法 -
蒲丽才15947357435 ______ 31*2.5+0.9=(30+1)*2.5+0.9=75+2.5+1-0.1=78.5-0.1=78.4

彭常寒38300.1十0.3+0.5+0.7+0.9+0.11+0.13+0.15+0.17+.19..... -
蒲丽才15947357435 ______ 展开全部0.1十0.3+0.5+0.7+0.9+0.11+0.13+0.15+0.17+.19.....+0.99=(0.1+0.9)+(0.3+0.7)+0.5+(0.11+0.99)+(0.13+0.97)+...+(0.49+0.51)=2.5+1.1*(49-11)/2=2.5+20.9=23.4 如果题目中“0.1十0.3+0.5+0.7+0.9”是0.01+0.03+...+0.09,那么,=(0.01+0.99)*(99-1)/2=49

彭常寒38302.5*13+0.9能简便运算吗?怎么算?(列式) -
蒲丽才15947357435 ______[答案] 2.5*13+0.9 =2.5*12+2.5+0.9 =2.5*4*3+3.4 =10*3+3.4 =30+3.4 =33.4

彭常寒38302.5*3.7+0.9简便运算 -
蒲丽才15947357435 ______ 2.5x3.7+0.9=2.5x4-2.5x0.3+0.9=10-0.75+0.9=10+0.15=10.15

彭常寒3830列式计算 2.5加上0.9的差除它们的和,商是多少? -
蒲丽才15947357435 ______ 2.5+0.9=3.4 2.5-0.9=1.6 3.4/1.6=2```````0.2

彭常寒3830初一有理数混合运算80道(带答案) -
蒲丽才15947357435 ______[答案] 1)-23÷1 *(-1 )2÷(1 )2; (2)-14-(2-0.5)* *[( )2-( )3]; (3)-1 *[1-3*(- )2]-( )2*(-2)3÷(- )3 (4)(0.12+0.32) ÷ [-22+(-3)2-3 * ]; (5)-6.24*32... +4.2*3.74 347+45*2-4160÷52 32.52-(6+9.728÷3.2)*2.5 87(58+37)÷(64-9*5) [(7.1-5.6)*0.9-1.15] ÷2.5 (3.2*1.5+2.5)÷1.6 5.4÷[...

彭常寒3830五年级3000道口算题 急!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -
蒲丽才15947357435 ______ 4.7+2.3= 4.5*2= 6.9-2.5= 7.2*0.8= 6*3.4= 0.62-0.32= 1.4*0.5= ...

彭常寒3830我要480道五年级口算题啊,切记一定要有答案再详细补充几点:第一,必须是小数的 第二,一定一定要有答案 -
蒲丽才15947357435 ______[答案] 4.8+2.3= 5.6÷7= 4.7+6.2= 3.7-0.07= 27÷0.01= 3.72+2.28= 0.62+0.38= 1.25*4= 0.45÷0.09= 5.2*0= 1.73+3.2= 1.12*100= 8.7÷0.29= 10.3+5.2= 1.03-0.9= 12.4+0.37= 0.04*25= 0.29-0.18= 4.83-2.53= 1.25*0.8= 1-0.02= 1.7-0.9= 3.6+4= 8.5÷5= 6+7.8= 3....

彭常寒3830求,小学五年级含小数分数整数的四则混合运算练习题? -
蒲丽才15947357435 ______ 45 * 2/3 + 1/3 * 15 7/19 + 12/19 * 5/6 1/4 + 3/4 ÷ 2/3 8/7 * 21/16 + 1/2 101 * 1/5 – 1/5 * 21 50+160÷40 (58+370)÷(64-45) 120-144÷18+35 347+45*2-4160÷52 (58+37)÷(64-9*5) 95÷(64-45) 178-145÷5*6+42 420+580-64*21÷28 812-700÷(9+31*11) ...