Intel Xeon 6990E+ vs Intel Xeon 656
CPU · Specs Compare
General Parameters
Release Date
May 2026
Feb 2026
Manufacturer
Intel
Intel
Type
Server
Server
Core Architecture
Clearwater Forest
Granite Rapids
Integrated Graphics
N/A
N/A
Generation
Xeon 6+ (Clearwater Forest-SP)
Xeon 600 (Granite Rapids-WS)
Series
—
Intel Xeon 6 processors
Package
Manufacturing Process
3 nm
5 nm
Socket
Intel Socket 7529
Intel Socket 4710
Power Consumption
450 W
210 W
Peak Operating Temperature
98°C
98°C
Foundry
Intel
Intel
I/O Process Size
10 nm
10 nm
I/O Die Size
2x 241
2x 241
Package
FC-LGA18N
FC-LGA18N
Die Size
—
2x598 mm²
CPU Performance
Performance Core Base Frequency
2.2 GHz
2.9 GHz
Performance Core Turbo Frequency
3.2 GHz
4.8 GHz
Total Core Count
288
20
Total Thread Count
288
40
Bus Frequency
100 MHz
100 MHz
Multiplier
22.0
29.0
L1 Cache
96 KB per core
112 KB per core
L2 Cache
4 MB per module
2 MB per core
L3 Cache
576 MB shared
72 MB shared
Unlocked Multiplier
No
Yes
SMP
2
1
Performance Cores
—
20
Performance Core Threads
—
40
Memory Parameters
Memory Types
DDR5-8000
DDR5-6400
Max Memory Size
1.5 TB
4 TB
Max Memory Channels
12
8
Max Memory Bandwidth
768.0 GB/s
409.6 GB/s
ECC Memory Support
Yes
Yes
Miscellaneous
PCIe Version
5
5
PCIe Lanes
96
128
▲ Specs Compare
Data sourced from official specifications and benchmark tests.