Select any two CPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game Core 2 Solo ULV SU3500 1.4GHz Core Solo U1400 1.2GHz
Cyberpunk 2077 1687% 3298%
Assassins Creed: Valhalla 2305% 4475%
Call of Duty: Black Ops Cold War 1631% 3193%
Watch Dogs Legion 2305% 4475%
Godfall 3350% 6462%
FIFA 21 1571% 3078%
Microsoft Flight Simulator 1924% 3749%
Grand Theft Auto VI 2837% 5485%
World of Warcraft: Shadowlands 2678% 5183%
Genshin Impact 1253% 2473%

In terms of overall gaming performance, the Intel Core 2 Solo ULV SU3500 1.4GHz is very slightly better than the Intel Core Solo U1400 1.2GHz when it comes to running the latest games. This also means it will be less likely to bottleneck more powerful GPUs, allowing them to achieve more of their gaming performance potential.

The Core 2 Solo was released over a year more recently than the Core Solo U1400, and so the Core 2 Solo is likely to have better levels of support, and will be more optimized for running the latest games.

Both CPUs exhibit very poor performance, so rather than upgrading from one to the other you should consider looking at more powerful CPUs. Neither of these will be able to run the latest games in any playable way.

The Core 2 Solo and the Core Solo U1400 both have 1 cores, and so are quite likely to struggle with the latest games, or at least bottleneck high-end graphics cards when running them. With a decent accompanying GPU, the Core 2 Solo and the Core Solo U1400 may still be able to run slightly older games fairly effectively.

More important for gaming than the number of cores and threads is the clock rate. Problematically, unless the two CPUs are from the same family, this can only serve as a general guide and nothing like an exact comparison, because the clock cycles per instruction (CPI) will vary so much.

The Core 2 Solo and Core Solo U1400 are not from the same family of CPUs, so their clock speeds are by no means directly comparable. Bear in mind, then, that while the Core 2 Solo has a 0.2 GHz faster frequency, this is not always an indicator that it will be superior in performance, despite frequency being crucial when trying to avoid GPU bottlenecking. As such, we need to look elsewhere for more reliable comparisons.

Aside from the clock rate, the next-most important CPU features for PC game performance are L2 and L3 cache size. Faster than RAM, the more cache available, the more data that can be stored for lightning-fast retrieval. L1 Cache is not usually an issue anymore for gaming, with most high-end CPUs eking out about the same L1 performance, and L2 is more important than L3 - but L3 is still important if you want to reach the highest levels of performance. Bear in mind that although it is better to have a larger cache, the larger it is, the higher the latency, so a balance has to be struck.

The Core 2 Solo has a 1024 KB bigger L2 cache than the Core Solo U1400, but neither of the CPUs have L3 caches, so the Core 2 Solo wins out in this area with its larger L2 cache.

The maximum Thermal Design Power is the power in Watts that the CPU will consume in the worst case scenario. The lithography is the semiconductor manufacturing technology being used to create the CPU - the smaller this is, the more transistors that can be fit into the CPU, and the closer the connections. For both the lithography and the TDP, it is the lower the better, because a lower number means a lower amount of power is necessary to run the CPU, and consequently a lower amount of heat is produced.

Both the Core 2 Solo and the Core Solo U1400 have the same TDP of 6 Watts, but the Core 2 Solo has a lower lithography size, and so will affect your yearly electricity bills less adversely.

CPU Core Details

CPU CodenamePenrynYonah
MoBo SocketSocket 956Socket 479
Notebook CPUyesyes
Release Date29 Mar 200923 Apr 2006
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores1vs1
Clock Speed1.4 GHzvs1.2 GHz
Turbo Frequency-vs-
Max TDP6 Wvs6 W
Lithography45 nmvs65 nm
Bit Width-vs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size128 KBvs64 KB
L2 Cache Size3072 KBvs2048 KB
L3 Cache Size-vs-
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphicsnono

CPU Package and Version Specifications

Package Size-vs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewPenryn is the code name of a processor from Intel that is sold in varying configurations as Core 2 Solo, Core 2 Duo, Core 2 Quad, Pentium and Celeron. During development, Penryn was the Intel code name for the 2007/2008 "Tick" of Intel's Tick-Tock cycle which shrunk Merom to 45 nanometers as CPUID model 23. The term Penryn is sometimes used to refer to all 45 nm chips with the Core architecture. Chips with Penryn architecture come in two sizes, with 6 MiB and 3 MiB L2 cache. Low power versions of Penryn are known as the Penryn processor. The smaller version is commonly called Penryn-3M and is used for the single-core processors. The Penryn-QC quad-cores are made from two chips with two cores and 6 MB of cache per chip. The desktop version of Penryn is Wolfdale and the dual-socket server version is Wolfdale-DP. Penryn-QC is related to Yorkfield on the desktop and Harpertown in servers. The MP server Dunnington chip is a more distant relative based on a different chip but using the same 45 nm Core microarchitecture. Penryn was replaced by the Nehalem based Arrandale (dual core) and Clarksfield (quad core).Yonah was the code name for (the core of) Intel's first generation of 65 nm process mobile microprocessors, based on the Banias/Dothan-core Pentium M microarchitecture. SIMD performance has been improved through the addition of SSE3 instructions and improvements to SSE and SSE2 implementations, while integer performance decreased slightly due to higher latency cache. Additionally, Yonah includes support for the NX bit.