Xeon X5550

Details and Benchmarks for Intel Xeon X5550

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Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Xeon X5550 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,474 Rank: 1314
Rank Name Score Visual
1310 Pentium J6426 4,478
+0.1%
1311 Phenom II X4 B65 4,477
+0.1%
1312 Phenom II X4 980 4,476
+0%
1313 PRO A10-8770E 4,476
+0%
1314 Xeon X5550 4,474
1315 Core i5-750 4,473
+-0%
1316 Core i5-680 4,473
+-0%
1317 Core i7-965 4,472
+-0%
1318 Xeon E5645 4,468
-0.1%
1319 Xeon E5-2430 v2 4,467
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Xeon X5550 based on multi-threaded benchmark results.

4,578 Rank: 1123
Rank Name Score Visual
1119 Pentium G4520 4,578
+0%
1120 Core i7-7600U 4,578
+0%
1121 Core i5-2320 4,578
+0%
1122 Xeon X3440 4,578
+0%
1123 Xeon X5550 4,578
1124 Pentium G4560 4,577
+-0%
1125 Xeon W3580 4,577
+-0%
1126 Ryzen 3 2200GE 4,576
+-0%
1127 Athlon 240GE 4,576
+-0%
1128 A10-7890K 4,576
+-0%

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Singlecore Score

Single-core performance score for Xeon X5550 based on single-threaded benchmark results.

4,404 Rank: 1387
Rank Name Score Visual
1383 Xeon E5540 4,408
+0.1%
1384 Core i3-3120M 4,406
+0%
1385 Core i5-2450M 4,404
+0%
1386 Core i7-875K 4,404
+0%
1387 Xeon X5550 4,404
1388 Pentium Silver N6000 4,404
+0%
1389 Celeron G1840T 4,403
+-0%
1390 A12-9730P 4,400
-0.1%
1391 Core i7-3689Y 4,400
-0.1%
1392 Core i7-870 4,400
-0.1%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Xeon X5550 based on integer math, floating point math, and prime number computation benchmarks.

4,602 Rank: 959
Rank Name Score Visual
955 Core i7-2820QM 4,605
+0.1%
956 Xeon E3-1220 4,605
+0.1%
957 Core i3-9100TE 4,604
+0%
958 Core i7-870 4,603
+0%
959 Xeon X5550 4,602
960 Core i7-940 4,602
+0%
961 Core i5-6442EQ 4,601
+-0%
962 Xeon W3530 4,601
+-0%
963 Core i5-2500 4,600
+-0%
964 Core i7-2920XM 4,600
+-0%

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Data Processing

Aggregated score for Xeon X5550 based on data encryption, data compression, and string sorting benchmarks.

4,574 Rank: 982
Rank Name Score Visual
978 Pentium Gold G7400T 4,575
+0%
979 Core i3-1005G1 4,574
+0%
980 Core i7-2675QM 4,574
+0%
981 Core i5-7400T 4,574
+0%
982 Xeon X5550 4,574
983 Ryzen Embedded R1505G 4,573
+-0%
984 Core i5-6300HQ 4,573
+-0%
985 Xeon E3-1225 4,573
+-0%
986 Core i7-940 4,573
+-0%
987 Core i3-9100TE 4,573
+-0%

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Physics & Compute

Aggregated score for Xeon X5550 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,590 Rank: 985
Rank Name Score Visual
981 Core i3-6098P 4,591
+0%
982 Core i5-2400 4,591
+0%
983 Core i5-6360U 4,590
+0%
984 Core i5-2320 4,590
+0%
985 Xeon X5550 4,590
986 Core i3-7100T 4,589
+-0%
987 Xeon X5570 4,589
+-0%
988 Core i5-2405S 4,589
+-0%
989 Core i7-2720QM 4,588
+-0%
990 Core i3-7101E 4,588
+-0%

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Xeon X5550 Details

As of March 2026, the Intel Xeon X5550 remains a relic of the late 2000s, a server-class processor launched in March 2009. While it was once a serious contender in high-performance computing environments, its performance today is dwarfed by modern processors, even in the server and workstation segments. With a base clock of 2.666 GHz and a turbo frequency of up to 3.066 GHz, the Xeon X5550 leverages Intel's Gainestown microarchitecture on a 45 nm process, featuring 4 cores and 8 threads thanks to Simultaneous Multithreading. The chip integrates 7.629 MiB of L3 cache, a substantial amount for its era, and supports triple-channel DDR3 memory with ECC, a critical advantage for mission-critical applications where data integrity is paramount.

The Xeon X5550 operates on a 95 W TDP and uses the Socket 1366 interface, requiring a robust cooling solution due to its power consumption. It lacks integrated graphics, meaning a discrete GPU is necessary for any visual output. The processor supports PCIe Gen 2 and includes essential virtualization technologies such as VT-x and TXT, making it suitable for virtualized server environments. Despite its age, the Xeon X5550 can still be found in legacy systems where stability and compatibility outweigh raw performance.

In benchmark testing, the Xeon X5550 achieves an Overall Score of 4474, placing it at #1314 out of 2060 processors. Its Singlecore Score of 4404 ranks it #1385, while its Multicore Score of 4578 places it at #1119. These scores place it well behind modern CPUs, with even entry-level processors like the Core i5-7267U surpassing it in multicore performance. In comparison, top-tier processors like the Ryzen Threadripper PRO 9995WX achieve over 9,000 in overall scores, highlighting the vast technological leap in just over a decade.

The Xeon X5550's strongest performance category is multicore computing, where it outperforms several older desktop processors like the Core i7-965 and Xeon E5645. However, its single-core performance lags behind many modern chips, indicating that its design prioritizes throughput over individual thread speed. This makes it suitable for workloads that benefit from parallel processing, such as virtualization or older server applications, but unsuitable for tasks requiring high single-thread performance.

In conclusion, the Intel Xeon X5550 is best suited for legacy server environments where backward compatibility and ECC memory are essential. While it offers respectable multicore performance for its time, it is now obsolete in the face of modern processors. For new deployments, even mid-range modern CPUs offer superior performance, efficiency, and features. The Xeon X5550 serves as a historical marker of Intel’s server architecture evolution, but it no longer represents a competitive option in today’s market.
Frequently Compared

AMD Phenom 9650 35 views

AMD Ryzen 7 PRO 2700X 32 views

AMD Phenom 9750 32 views

AMD Athlon II X2 270 32 views

AMD A8-7200P 31 views

AMD Ryzen 3 PRO 2200GE 30 views

AMD Ryzen 5 3600 30 views

AMD Ryzen 9 PRO 3900 30 views

AMD Ryzen 5 3500X 28 views

AMD A10-7400P 28 views

Intel Xeon X5550

Main Specifications

Designer: Intel
Name: Xeon X5550
Cores: 4
Threads: 8
Base Frequency: 2666 MHz
Clock Multiplier: 20x (locked)
Core Name: Gainestown
Socket: Socket 1366
Package: FC-LGA8
Target Segment: Server
TDP: 95 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.244 MiB
L3 Cache: 7.629 MiB

Memory Specifications

Supported Memory Type: DDR3

Physical Specifications

Process: 45 nm
Die Area: 263 mm²
Transistor Count: 0.00 billion
Manufacturer: Intel

CPU Features

MMX SSE SSE2 SSE3 SSSE3 SSE4.2 EIST TXT VT-x
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