64MB vs. 128MB - Stock Clock Speeds

We chose two games to benchmark a 64MB card and a 128MB card - Jedi Knight 2 and Unreal Tournament 2003 (through the use of the Unreal Performance Test). The Unreal Performance Test doesn't use large enough textures to exceed 64MB when compressed while Jedi Knight 2 is borderline when the High Quality video settings are enabled.

We kept the 64MB card at its stock memory clock speed of 250MHz and the 128MB was left at 222MHz for these benchmarks.

Unreal Performance Test 2002 - 640x480
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

48.7

48.9

|
0
|
10
|
20
|
29
|
39
|
49
|
59
Unreal Performance Test 2002 - 800x600
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

47.9

48.2

|
0
|
10
|
19
|
29
|
39
|
48
|
6
Unreal Performance Test 2002 - 1024x768
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

43.9

44.3

|
0
|
9
|
18
|
27
|
35
|
44
|
53
Unreal Performance Test 2002 - 1280x960
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

33.6

34.4

|
0
|
7
|
14
|
21
|
28
|
34
|
41
Unreal Performance Test 2002 - 1600x1200
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

22.6

23.4

|
0
|
5
|
9
|
14
|
19
|
23
|
28

You'll notice that UPT is more GPU bound than memory bandwidth limited and thus there's very little difference between the two types of cards. The differences that do exist are slightly in favor of the faster 64MB memories.

Jedi Knight 2 - 1024x768
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

125.7

120.8

|
0
|
25
|
50
|
75
|
101
|
126
|
151
Jedi Knight 2 - 1280x1024
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

123.5

97.3

|
0
|
25
|
49
|
74
|
99
|
124
|
148
Jedi Knight 2 - 1600x1200
128MB GeForce4 Ti 4200

64MB GeForce4 Ti 4200

101.7

97.1

|
0
|
20
|
41
|
61
|
81
|
102
|
122

Jedi Knight 2 paints a different picture; it is much more difficult to get repeatable results with the 64MB card and thus the average of frame rates ends up being noticeably lower with High Quality detail levels left enabled. Here it's clear that the added memory can be helpful.

64MB vs. 128MB 64MB vs. 128MB - Equivalent Clock Speeds
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